[WaRe]

Hey guys i'm about to move into my new house. My basement is unfinish. So I will be doing the basement with a friend of mine.
Here are a few questions:
I currently have a LG 60" TV. I am thinking of installing a projector with a motorize screen. Should I stick with my 60" or go bigger? I always wanted a projector for my hometheater.

For inwall wiring.
Speaker wires what AWG should I go with?

HDMI cable, safe to say i can go with something that's about 25' long? I won't lose any pic/sound quality assuming I go with a higher rating?

I am planning on putting my avr compoments at the back behind my seatings hence the long wirings.

Thanks