Heck, for that matter, standard M22s wouldn't work in a column. They've got a rear port. Best bet is inwall M22s, I would think in this case. At least they're designed to be constrained like that.
Unless of course you happened to make the column's 19.8" x 7.3"
M22's x 3, QS8's x 4 SVS PC12-Plus, Denon 3311ci Ear-to-ear grin? Priceless!