For your 17 ft. seating distance, I suggest you go with a screen size of around 130 to 135 inches (diagonal with 16 x 9 aspect ratio). The Epson 5020 can put out a lot of lumens in a fairly accurate color mode (but only moderate lumens output in the best calibrated mode) and would be good match for your case (assuming you want a 16 x 9 screen and not a 2.35:1 aspect ratio 'scope' screen). You can find a comparison of Epson to the Panasonic projectors HERE
As for low priced fixed frame screens below are a few suggestions:
Focupix fixed frame (listed as 138" but with 130" viewable diagonal size): LINK
Elite 135" Sable fixed frame - HERE
Elite 135" EZFrame fixed frame - HERE
Visual Apex 135" fixed frame - HERE
Monoprice 133" fixed frame - HERE
I recommend you get a white screen fabric for any of the above screens and such white screen material will have an actual
gain if near 1.0 (or just a little higher).
Many AVS Forum members like the Dalite screens using their "High Power" fabric that when used as intended provides high gain (i.e. 2.4) for a very bright image (especially useful for viewing 3D video). In order to get the full benefits this screen can offer you must mount the projector just a little above eye level (for the normal seated viewing position). If this would work for you then the least expensive Dalite fixed frame screen model that offers the High Power fabric as an option is the "DaSnap" series of screens. The frames for the DaSnap series do not look as nice as most of the above less expensive screens, but it is functional. The 133" DaSnap screen with the High Power fabric is listed HERE
, but it does cost over $800.
Also be aware that some of the above screens are shipped in very long boxes (where the top and bottom parts of the frame are made as a single piece) and such screens must be shipped by motor freight as they are too large for regular UPS of FedEx shipping. As a result the shipping costs of these screens will be much higher. So be certain to check the final price with shipping when comparing the above screens.