what size magnepan

I'd recommend the .7 along with one or two REL subwoofers.

I currently have the .7 with 2 REL subs in the corners per REL’s guidance in a 11’ x 13’ room. I may have a twinge of what-about-itus wondering if the 1.7i would be better, but I think the .7 is a great choice. I'm still kind of shocked at how much tuneful/ quality bass these put out on their own without the subs. 

+1 to above input

lrs+ or .7 with rel subs

I'd go LRS in a corner setup. I did that with my MMGs and it worked pretty good. The 1.6s were too big for the room and I could not get them to work. I own the .7s but I thought my MMGs were better. 

Some years back, I tried the 1.6QRs in a 15 X 13 room and found they just didn't work well.  I'd go with the LRS or .7s that others have suggested.  Depending on use of the room, location of doors and windows, furniture choices, and WAF issues, you may even find that these smaller Maggies may not be the best choice.  The only way to know for sure is to give them a try.