I don't necessarily agree with the philosophy that one needs more power for Maggies in a small room for bass reasons or, for that matter any other reason. On the contrary, I have been powering my 3.6s with a lowly NAD C320BEE for well over a year now with excellent results. Actually, I purchased this amp only as an interim amp while I searched out a high end amp that would become resident for the long haul. That was over a year ago and here I am today still searching. While I have tried amps that were, overall, better than the NAD, the differences have been fairly slight and ultimately for me, not worth the price difference - at least at this point.
In any event, your room is not too small for the 3.6s. The dipole effect, a minimum amount of side wall acoustic treatment and a bit of toe will all but eliminate side wall reflection interference which should be your primary concern. You will however need about 3' to the rear wall to somewhat even out the bottom end. There will always be some amount of lumpiness due to the unbaffled design in a smaller room but, I don't recommend going overboard trying to obtain small decibel deviations with frequency.
The speaker is fabulous for the most part. There are better speakers in one respect or another but, the soundstaging and realism obtainable with the 3.6s is remarkable. The ribbon tweeter produces a refined and delicate sound that is arresting. It will shine in your room. You don't need the white house to realize its strengths.