alright, so i’m going to give you a different option, and what i see as by FAR the best, KH just sent his 2009 products to the stores, unicycle.com has not gotten thier shipment in yet… but they will in a day or two.
a 2009 KH 26" unicycle would fit you the best, a 24" WOULD work.
you have several brands to choose from, so i’ll go from cheapest to most expensive.
Nimbus: strong, slightly heavier, most recommended for the price
Qu-ax: these things are heavier, but DO NOT break… i have never heard of anything breaking on one (save beginner/training cycles)
KH: lighter (easier to manuver), very strong
Koxx-one should be about the same price as the KH, but harder to find… you are probably better off w/ a KH due to the fact that a few have had hub failures
if you need a testimony of strength… the rim and Hub are the only things that are directly effected by a heavier person… i can’t imagine that you or anyone else will break a KH hub (nimbus is designed from it, EXTREMELY similiar, none have broken, but not as well “tested”)
to sum it all up, i think you should wait until the KH 09 line is here… get the 26" KH 09
wait on the brakes, you will know when you need them, you have at least a few months on that.
a 24" will be more maneuverable and have a stronger wheel build due to shorter spoke lengths… true wheel size is actually 26" w/ the tires they use.
now for a side note…
KH’s post on his new products never says (well i didn’t see it skimming over) he is coming out w/ a “KH26” but he does have a word about the frame and rim, and if he says those things, i’m assuming he has them… i suggest waiting, it is a big enough purchase for a few days to not make a large difference.