The only thing I can say is, I mined bitcoin when it was at $5.00 a coin. I mined 80 coins, and forgot about them. I am now freaking rich, and will be able to pay off my 30 year mortgage soon LOL.
I used to have a 97" screen projector while it was amazing at night. It was HORRIBLE during the day. You couldnt see anything on the screen. The only way I would suggest getting a projector over a plasma/lcd is if you where able to completely blackout your living room, or had a basement type room.