I think it's fine, it's your bike do what ever you want with it. 2nd, I have no clue about maxle axles. I know pegs only fit 3/8th's(10mm) axles and 14mm axles. Those are the size of BMX axles. Look around, and search and I'm sure you will find something that'll work.
Seriously thou, why on a 26", on a 24" it's already bad enough. For peg grinds, get a bmx, looks alot better to. Pegs on 26" looks dodgy as hell.
im switching to 24". but i dont like bmx i dont know why it seems to easy but even if i wanted one i wouldnt be able to sell my bike and get the money for a bmx any way