I play a 26, though I've been playing a 36, and I've got a 28 on the way.I wouldn't get too hung up about getting the beater in the center of the head though. Some of the best bass drum tones I've heard came from being off-center. With the 36" drum, it was inevitable, obviously. But I never complained, or heard a complaint about its tone. Quite the opposite, actually. You can always add "punch" with proper dampening, but tone is either there, or it's not.
My "gigging" kit. Sorry about the grainy and out-of-perspective iPhone photo. Not vintage-- they are 1999 six-plys. But I want to echo that your beater will fall below center. I find that these larger drums don't sound good if struck dead-center. I also have a 1969 three-ply kit with a 28" I have used on gigs (sorry no pictures yet, they are in the long line of stuff slated for resto work).
I also want to add that my 13-16-26 setup (18" black vistalite in the photo, added just for fun) has actually been an extremely versatile setup for gig situations-- it can really cover a lot of ground. Great for reggae, even-- think kick + snare click on the 1's and 3's.
Be prepared to pay a hefty premium for a three-ply 26", even for a marcher. That Led Zeppelin connotation has really pushed the prices to the stratosphere.