Fixed 80" screen in HC grey from Germany / Europe?

Hi,

First, apologies for using english, but my skills in Deutch sprache are somerhing between minimal and non-existent.

I've been trying to find 80" high contrast fixed grey screen with gain between 0.8 - 1.0 from Finland, but have not been able. Screens that are imported here jump from 77 to 90+ in size with nothing in between. So I turn to you for help, since most German companies do ship to Finland.

I'm building a "home theater" to very small room, only 290 x 350 in size. Ceiling is white, walls off-white, floor black and all furniture dark or black. One sidewall has windows from corner to corner, but I have blinds and blackout curtains covering that. Screen will have black 40 cm deep wall cabinets on top of it and black cabinet/drawers below it to help a little with reflections. I do have "light control", because the room is my dedicated work-/HT-room, but sometimes kids will want to watch cartoons from the screen, and at those times I'll have some little lamp on. Hence the grey screen instead of white.

Throw range will be 249 cm (- thickness of the screen), same as the viewing distance. My Sanyo PLV-Z3000 is able to produce 82" picture (tested), so I'm going for biggest "safe" size, 80".

So I'm kindly asking your help / opinion considering two things:

1) Do you agree with my choice of screen colour / gain?

2) Where could I find that kind of screen, and have it shipped to Finland?

I'm on a budget, so my options are somewhat limited. I should stay below 500€, the lower the better (while getting decent quality screen for the money).

I'd like to build the screen myself (and paint the room darker), but at the moment that is not an option due to lack of time. The whole apartment is under renovation and I have few kids under 1,5 years old eating up my leisure time and running around at my feet

Thank you so much!