Why get the OP to spend more projector $$ on this room and setup? This room would be better served with something other than a projector. Save the money for when the OP moves to his new place and has a room that can handle a projector properly (less than one year) . Then use the saved money for a larger decent screen and some room treatments.
I think the emotional aspect of his purchase is clouding the issue. If he had posted his ideas for his room before he purchased, I honestly don't think anyone would have suggested that this setup, in its current configuration, would be wise.
Current use, less than 8 feet seating distance will not work with whatever screen he chose. The Epson screen door effect will still be noticeable and much too pronounced. The OP will still be frustrated and disappointed. Helping to salvage this situation isn't going to help, just lead to further annoyance.