no basement anymore, what to do with mits hd1000

Situation:


I just moved to an upstairs condo with lots of windows and white everything. I do have a nice wall to either paint or hang a screen. Alternatively to using this wall, I would put up a pull-down screen in front of one of the larger windows (this would both shut out the single largest light source in the room and, I hope, gain me some quality by having a commercially engineered screen) My main question is what is the most versatile option for me here? I was happy with a neutral gray rectangle in a dark basement before but now I have the dilemma of balancing my nice well-lit living area with a decent projection image. I will be able to make the room dark if I need to (I plan on putting BOC curtains in each window) but I don't want to make it a practice of shutting out the light just to turn on the PJ and watch some casual TV or play some video games during the day.


$$$:


My budget would be about $500 for the screen and another maybe 200-300 for a ceiling mount which I need to drop about 4 or 5 feet from an angled vaulted ceiling. I'll be shooting for something around 100" diagonal image. Like I state above, I can spend some money on a screen but I really lean towards painting the wall if that will work in a high light environment. It worked so well in my basement that I still have a hard time believing that the money for those screens is worth whatever benefits my be realized.


Needs:


My standards aren't super high. The Mitsubishi HD1000 has done me well even over the last 11 months when I had it shone on a crumby white wall in a basement with very little ambient light. Basically I would like to be able to see an image that is bright enough to functionally play PS3 games during the day or view a daytime sporting event in a room with quite a bit of light. I realize I would have to drop the BC over the biggest windows to dim the room somewhat but when it comes down to it, there will still be quite a bit of light during a lot of my usage time. I don't understand gain that much but it sounds like a high power would not be in my interest because I definitely do not want a narrow viewing cone.