Thanks for the suggestions however i have done it so that it fits perfectly inside my room i have about 5ft of wall to project onto (living at home as a student for the next 2 years) after that i'll be taking full advantage of a massive screen don't worry. I've done my research on the W1070 and the HD131Xe as i want to game and watch movies the HD131Xe is the one for me with it's low input lag and reportedly it's much better with blacks and shadowing.
also based on the price versus a tv of equal size and performance the HD131Xe vastly outperforms and out-values every option.
Basically i have no point for the shorter throw due to my wall size also i believe the W1080ST is a bit pricier right i can't remember off the top of my head.
The only thing i haven't done research on so far is the screen, i've seen some people mention about pure white screens not being best? but a greyish screen being better? also saw someone say they used just a basic white emulsion and it looks perfect. if anyone could take the time to talk about screens or colours that'd be great!
For you going with such a small screen for now I would go gray.... If your going to leave the screen on the wall and dont need a retractable at this time I suggest just painting with one of the colors suggested on the DIY screen board and maybe picking up some black velvet to make a border or use wooded molding painted flat black. If your wall is not smooth pick up a piece of cheap panaling or foamboard to use.
The reasons I suggest this are as follows, for one this like you said its a semi temporary setup and the hd131xe is going to be VERY bright at that close and small of a screen size. the grey will help tone it down like a ND filter would.
Most people thing there is a huge difference in picture quality between screen material and a plain matte white or grey finish but this really only depends on the application. for example many theaters just use a fireprrof form of matte white blackout cloth.
If you need to squeeze extra lumens out of a large image you would want a higher gain screen and thats were it starts to really matter what type you go with as they all steal the light output from various viewing angles from the sides to make the view brighter from front and center.... Think of them as a reflector on a flashlight where with turning the bezel you can make the beam more focused and brighter in the sweet spot or wider and not as bright. the filament or bulb is like the projector.... Most high power screen waste a lot of the extra lument by directing them back up towards the projector mounted on the ceiling...(this is why some mount the projectors an earshot from thier heads and complain about fan noise so much)
I have seen high gain screens in actiion and feel with a reasonable screen size for the light output of the projector they are really not needed at all unless you have an ambient light issue.... they also help by deflecting light that comes at them from a side or indirect angle. This helps give the better percieved blacks (grey screen will do this to an extent too) but again if anyone is going to be sitting against the left and right walls of the theater room a high gain screen will make the image seem very flat and dull because they are sitting outsit the "sweet spot" that the light has been refocused to. I will add that besides a room with ambient light this can help if your side walls are painted white but its a wash if the ceiling and back wall are also white....
This is just my opinions based on what Ive seen and read, if anyone has anything to ad or correct me on please do...
BTW I noticed no picture quality difference going from my homemade blackout cloth screen to my 1.1-1.3 gain electric screen except the electric screen is not flat at the edges and I sometimes see ditortion and now that my new HD131xe is so bright I can see the texture and "HOT" spots where a slight ripple has caused more reflection back to me... again a flat or matte surface would not do this.