[Jrm]

HI all ,
I'm really new to this and have a few questions I'm hoping youmay be able to help me with ..
I've set up a screen and 5.1 sound system I was given in a spare double bedroom (now my eldest has moved out) for my 2 boys to play their xbox360 on and watch some movies.
I've been offered an Optoma HD57 for £100 from a friend that has only been used for 63 hours and is in near perfect condition.
1. Would this be suitable for this type of thing ?
2. The projector is going to be shelf mounted but only 10ft 2" away from the screen will this give them a decent size picture ?
3 . How can I black out the small double window to make the room darker?

Sorry for the questions just want my boys to have their own room and leave our main tv alone
Thanks for any help
Jerry