I've been emailing with Winni for a while now about this same projector. She's been great to communicate with.
I have the same concern as you about the white balance though.
Winni said this video is using the N-RGB2500
https://www.youtube.com/watch?v=HZ738KnaG6o
It looks good but not a great way to see the color balance.
I'm still waiting to see more before ordering it.
I think dt40 wides are worth it... it's not that much more expensive and you'll see many people on this forum are running dt40 wides... it's one of the big reasons I like goldenstarlaser over the competitors using pt40s (not that pt40s are bad, I just see lots of people happy with their dt40 wides).
I haven't decided how I want them tuned, but I think I will ask that they be tuned to 30K for wider scanning. That seems like a good place to start (before I delve into the world of retuning them myself).
I also would get the 3d holder upgrade so you can make adjustments to the alignment if necessary.
Feel free to ask me any other questions. I've been doing a lot of research on projectors at this price point, and it looks like I'm after the same thing as you (beam shows and later abstracts).
-Bill