Using a 24.5" wheel won't get you as much extra speed as it appears. The 22" tube-type tire and the 24.5" tubeless will have the same overall height, due to a shorter aspect ratio (height/width percentage) on the tubeless 24.5" tire. There are some very high profile tubeless tires for military use, but they're scarce and expensive.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!