running lower rpm?

[tashpop]

i've been following the general idea of around 35k rpm on my motors, but i'm kindof in a bit of a bind here. what i'm looking at is ideas for my newly acquired lsp. i'm going to be running a mm esc, but i'm not fully decided on which motor i'm going to go with. i have a really nice mega 22/45 here that i would love to put on the truck. problem is the best i can spin it with the mm is around 24k rpm. will there be any adverse effects running it at a lower rpm like that and using gearing to get me up to speed? i know too much gearing will spike the amps, but i believe these are very effecient motors, and i'm going to try to keep the truggy somewhat light.

if i can't do it i guess i'll just do a little looking for something that spins faster, but i'd like to use the money saved else where.