Jessica, i would order your M22's get them set up. Then see if (you) think you need a center.. Like i said in my initial post, in my room which is almost the same size as yours i don't really feel the need for the center. When i bought the speakers for my room i bought the L/R/C all at one time. If i would have bought the left and right prior to buying the center, i never would have bought the center.
Where will you be putting these speakers? Is there room for them to go on a stand, or will they be on a bookshelf? Do you have any photos of the ara, or a schematic of the area? I wound up mounting my L/R speakers on shelves i made that are just below the celling, above my door and closet, and aimed down at the listening area.
Also, if want you can call Brent and order any of the speakers that are on the auction site being sold by Axiom, if you don't want to wait on an auction.
Good luck with your decision.
