Scroll down the page a bit, and you'll see a nearly identical question was asked a few days ago. Lots of answers.
IMO not the Maggies if you're speakers will be on the long wall. You won't have enough overall depth to bring them far enough out in to the room. You'll have a nasty front wall timing/reflection issue from the dipole backwave.
Not to mention the rear wall reflection you're going to have with any speaker you choose, which you should be factoring in to your plans, as in look at some absorption panels for the wall behind your head. Your listening position is likely going to be very close to the back wall not matter what.
Sounds like you might have some budget gear. The vandersteens will most likely sound good with a wider range of budget gear. The mmgs can sound amazing with the right amp and ok with others. Try Naim. The naim gear controls the bottom end of maggies like very few amps. With most amps I agree with Mcreyn on the sub, but the bottom end of my mmgs with my naim gear is punchy and detailed. But you do want nearly three feet behind the mmgs.