Hm 24 might not clear primary case lip. Might call a vendor and ask for a OD measure. Old Brits Fred might know right off the bat. Commando have torque enough to pull 24T just fine in normal traffic just not leave em behind at a light as strain free, but a down shift to 2nd as 55-60 mph would be fine passing gear pull.
With 20 and 21T on responsive Combat I often found myself trying to snick 5th over drive just to stay legal speed climbing the steepest places in Ozark carrying a couple beer cases on back, because the rush by suck little throttle increases was too sensitive to stay carefree. On the lower gear in city traffic you must be relaxed on throttle not to just bark out ahead like police bait.
The main down side of 520 chain is the teeth wear rahter faster d/t being significantly thinner. I've done 520 lighter conversion on a Combat and a SV650 and worked at treat, just detectable in better response but after a few front sprockets and a couple read drums used up in a couple rear tire changes on each bike I have sworn off 520. 530 X-ring, not O-ring Obsolete Stiff chain, just does clear in some and the others it eats a clear path in a few miles w/o any real damage but cosmetic when you ever you expose the sprocket.
Throw yourself at the ground and miss!