Taking into account everything you have told me, I think I'll most likely go with:
(1) Behringer B2030P pair
(1) Behringer B2030P single (for center)
(1) SVS PC12-NSD sub
(1) Something for surround -pair
You said that surround doesn't need to be costly, and a smaller size would be nice for the surround/rear. What would you recommend for cheap surround sounds? The original surround I picked was the Polk Audio Monitor 30, and they cost pretty much the same as the Behringer. So its pretty much the same setup as you recommended in the beginning, but getting rid of the bigger behringer and switching up for smaller surround speakers. You mentioned that the center should be the same type as the left and right, so I could buy a single behringer for a center as well. Could easily upgrade 7.1 by getting another pair of surrounds as well, if I had the room for it... Does this setup sound horrible or would it not be to shabby for a beginner 5.1 setup? Or are there better surrounds that are also small for the same price? Let me know what you think in general.
Now of course this setup is a starting set, and I'd upgrade over the years. Though I'd prob stick with this for at least a year or longer before upgrading anything.