Please, help to solve a dilemma with a PJ screen

I am a projector noob but did some research and I've pretty much decided on BenQ W7000 for its outstanding sharpness, naturalness of the picture and outstanding 3D performance (according to testimonies and reviews, at least). I hope the contrast ratio won't me much of a disappointment after Panasonic GT20 plasma. Won't it?

But that's not my dilemma. The dilemma is which screen I should choose. I have a small room (12,25 square meters / 130 square feet) and I have two loudspeakers positioned near the short wall. It is the perfect position for them and it is impossible to move them apart any further. The distance between the speakers is around 160 cm (63").

On one hand, I want the screen to be as big as my room allows it. So the screen could be approx. 203 cm in width (80"), 100" diagonal 16:9. On the other hand, if I want this screen to lower enough to allow for a comfortable vertical angles it will block the speakers. I am concerned not only because the sound will be compromised but because my speakers (studio monitors, to be precise) are front-ported and produce massive amounts of air pressure on bass-heavy material. Will acoustically transparent screen be the solution for me? Will the screen wobble?

The alternative being, there's a free zone between the speakers which could be filled with a projector screen of 63" width. But I'm afraid this won't satisfy me in terms of immersion. Excellent 3D needs a large screen size.

So I'm asking you to share your thoughts. Is there anything that could be done to overcome these technical difficulties? Which PJ screens I should look at?

Thanks for the suggestion, but I forgot to mention that there's a balcony at the back of my room, behind the speakers, so I'll still need it. That's why I need only motorized in-ceiling screen.

I've been browsing the market for AT motorized screens... I would've chosen Seymour AV, but their smallest screen is 85" width which wouldn't fit in my room (the case is too wide).

I've been only able to find 2 screens which would fit my need...
1) Projecta Tensioned Elpro Electrol (86"/16:9) 117x200cm High Contrast Cinema Vision Sound
2) Screen Excellence Performance Motorized 90" 112 x 200 PF 80

Which one is better? Or maybe there's a better (and cheaper) one out there?

I highly doubt Seymour AV will make a 80" width screen just for me...

I wrote Chris yesterday after posting my previous message, waiting for the answer. Can anyone comment on two previous screens vs. Seymour AV's?