Well you have to think like a lady a bit on this one. First will she really appreciate the added equipment in the room? I know of no women who like seeing hanging projectors, or even rolled up screens on the ceiling, nor added stereos, and speaker systems. They like clean simple, and neat with a room that is warm and fuzzy, which you won't get with a projector setup. If you look in home and garden magazines they don't show these kinds of setups and Im sure she would rather have something that looks like something from one of those magazines. Second, will she be tolerant of having to always close shades before she watches, turn on the stereo, turn on the projector then wait for it to come on in ten seconds, then deal with less than stellar picture quality because even a little bit of light plus white walls will destroy the picture quality even with the shades part way down. What are her routines and habits right now? does she like to wake up and make the bed, or go around and close shades and curtains at night then open them up during the day? Having to do this everyday to watch tv is a pain, and believe me it gets old quickly with all this kind of setup, when you could simply turn on a tv instead. Also think about how us guys can lock ourselves away in the garage and work for hours on end, whereas most ladies would probably prefer to stay far away from this. Most ladies I know like to have sunshine coming through the windows so they can avoid a seasonal affective disorder situation. Will your wife really want to spend all of her days in a dark room like a movie theater?
Its nice to enjoy regular tv in sunlight during the day and turn it on numerous times during the day off and on. This is something you don't want to do with these lamps in projectors as it adds stress to the bulb and wears them out quicker, plus they don't last very long, and even though a lamp may be rated for say 4000 hours, this doesn't take into consideration the half life of the bulb, which means that half way through there you may lose up to 50% of its brightness. Then you'll start cringing when the wife leaves the projector on all day for junk tv programs knowing you'll have to spend another 300 bucks on a projector bulb. Hell a lot of people including myself have lamps that burn out half way before their rated hours, which really sucks. The only benefit to having the projector is a big screen in this environment, but there are lots of cons. Im a die hard movie buff, with my own dedicated home theater, and I find it a pain to always have to go through and turn everything on plus having to deal with multiple remotes since I don't have a universal. My mom has a skylight halfway between the projector and screen, and she won't watch movies with any light coming through that thing because it has that much of an effect on it.
If it were me, I'd buy a cheap 50 or 60 inch screen tv, then get another cheaper projector to sort of split the difference, so you can enjoy both . It doesn't sound like you watch much, so maybe the quality isn't as important to spend tons of money on expensive tvs or projectors. You can get an ultra bright projector to cut through the light, but in the end I still think the cons out way the pros