Hi Hank -
Welcome!!
You've definitely come to the right place!
+1 on everything Brad said, including the choice of projectors, SELEM (awesome!), etc.
Concerning fog vs. haze machines ~
While true haze machines are nice, and undoubtedly THE way to go if doing professional events, they tend to cost a bit more than your run-of-the mill fog machine.
If cost is a concern - and it certainly can be starting out for us mere mortals doing shows at home
- don't discount a fog machine that uses water-based "fog juice".
I have an Antari "Fazer" (fog machine with built-in high-velocity fan, basically) that's served me well for 7 years, using water-based fog fluid that I either ordered online (Froggy's) or purchased locally at at Guitar Center (Black Label). Other than placing a small fan in front of the fog machine to help spread & dissipate the fog a bit quicker, the setup has worked "stock" for me perfectly well for many shows, from "garage shows" to small events in recreation centers, and I rarely have to fill up the tank more than once for a performance.
The QuickShow / FB3 / Enttec USB Pro is a GREAT combo to start off with!
It's going to give you some very cool laser control options quickly & easily, but is also very powerful once you start digging in a bit deeper.
Plus, the same hardware combo can work with Pangolin's Beyond flagship suite, should you decide to upgrade sometime down the road.
AND, in addition to all the cues that come ready-made with QuickShow, there is a LOT of additional shared user content freely available for registered Pangolin users on the PangolinShows web site! 
DMX and laser cues work pretty much the same way in QuickShow when it comes to triggering, timeline, etc. ~
You create the cues in the cue grid, then drag the cues you want to use use - laser and/or DMX - onto your show timeline.
Easy!!
Any DMX-enabled device can be setup to run from QuickShow ~
You just use the "QuickDMX" tab in QuickShow (only visible when a DMX interface is attached) to create the settings you need for your particular DMX device, and save that as a cue. Then, just click on the cue, and that device and the settings you programmed are triggered!
One thing about the Enttec USB Pro & QuickShow ~
It can be configured for either DMX In or DMX Out, but not both simultanously.
However, I think you'll find that in use, that really isn't a hindrance...
QuickShow is MIDI-enabled, and every cue, page, and most controls can be controlled with a MIDI input.
So, instead of using a dedicated DMX control board, many users choose from a huge variety of USB MIDI controllers on the market, and map the keys, buttons, etc. to control your laser and DMX devices all thru QuickShow. This works GREAT, and is also taken to the next level if you step up later to Beyond ~ just do some searching here and on the Pangolin site about the APC-40 implementation. and you'll see the sky is the limit!!
(FWIW - Sometimes I'll run choreagraphed shows using Beyond and or LD2000 with my QM boards, and then use QuickShow with my FB3 and Enttec DMX USB Pro - on the same laptop computer! - to add DMX & beam effects on the fly, using my iPad and the MIDI Designer app as the MIDI controller for QuickShow. Very cool!!)
Projectors -
You'll want to get the most laser power you can afford (you'll see the reason why when you see overhead beam shows the first time!!).
But, even if you have to skimp a bit on overall combined power, you still want ANALOG modulation, and scanners rated at 30K -
That way, the graphics and colors you see on the QuickShow screen will be fairly accurately recreated by the laser.
Stay safe, and don't feel like you need to audience scan to get a good show ~
A show that uses a combination of overhead beams & graphics, plus maybe a few additional DMX effects, can be a VERY cool experience for you and your audience, and still be completely safe!
It's a lot to absorb - and definitely NOT cheap to get started with decent, reliable gear - but it looks like you're looking in what most of us would consider the right direction.
Welcome aboard, and enjoy the ride!!!

Randy
PS -
Welcome to the gang of old dudes playing with lasers!!
Though I've tinkered with lasers since I was in high school, I just really got heavily involved with show lasers around 7 years ago.
I'm 53... and holding...
There are quite a few folks here in the 40+ age bracket!!
Also, another FWIW ~
I know Brad addressed the SELEM LSO class in the thread after this, and also that you asked the question in the SELEM thread.
The LSO course would be GREAT to have ~
But, it IS pricey, and that's a chunk of change you could put towards your initial gear investment.
As long as you don't feel the need to jump headlong into audience scanning, and are just doing home shows as a hobby, you can still do safe shows while you're learning without necessarily taking the class. (Not saying that is the only reason to take the class, but since you're just starting out it might be a bit of - expensive - overkill).
If, down the road, you decide to start doing shows semi-professionally, by all means take the class as soon as you can, but don't feel it is absolutely necessary to dive into that level of training right away.
Most of what you'll need to know to safely do home shows you can learn from the folks here.
Last edited by Stuka; 06-06-2014 at 05:31.
RR
Metrologic HeNe 3.3mw Modulated laser, 2 Radio Shack motors, and a broken mirror.
1979.
Sweet.....