110" screen is about 8' wide giving you 2' on each side for speakers. With small satilite speakers you might get upto 120". Bigger than that you will need acoustic screen and put the speakers behind it. Jamestown makes a great screen for the money (cinewhite 1.3) but be prepared for a 3 month wait. Elite EZ frame are a little more money but still reasonable. Painting a white room is the least expensive job for the greatest improvement in proformance. Any dark flat color is good and especialy the ceiling a dark gray or flat black. Any heavy lined drapes will block the sliding glass door. There are roll down blackout window quilts that I have used and work great for insulation in winters.
"Smart enough to know better, to old to care" ------ Dedicated Bat Cave Home Theater, JVC RS49U/Mitsubishi HC7900DW Projector, 110" 16:9 Jamestown screen with variable power masking for CIW 2.50:1 to 16:9, Marantz 7009 with 7.1.4 Atmos with Ohm mains,3 DIY Subs (2 15" (1 ported, 1 sealed and a 12" 4th order bandpass), 1 DIY butt kicker, Custom Built HTPC, 18TB DroboFS NAS