Welcome to the forum.
A suggestion for yah laser wise. start small. a laser pointer or a cheap low power He-Ne from Ebay. practice with that and see if your feeling like your getting drawn into the hobby, then go for a bigger unit. reason im suggesting to start small is 1. Safety. get experience using a low power laser. get a feel for how it acts, play with it indoors reflecting it off objects & thru items.See what it does. Get some experience, then go bigger.
2. cost.
some of the higher powered lasers can get expensive! They also can be more easily damaged,knocked out of alignment or just plain destroyed by a small mistake.
By buying a low power laser thats surplus/used, you are out less money if you do have an accident.
Hope this helps some & good luck with your project!
Will there be three phase!!!!