Another Tire option could be to switch to a set of ITP C-Series cast aluminum 12" wheels and use 23" AT489 from carlisle. While the 489's may not be greatest tire, they are affordable and available. Just don't forget the Slime. The stock Maxxis tires from a Wolverine 450 are 23" on 12" rims and are radials.
I guess that depends on where you ride, in the sand you would never notice but on a rock and root riddled trail it would help some. The desert racers (like Baja) use the larger tire for the same reason, every little bit helps.