Wilmingtech

I am 5'11 and a 185 lbs and am typically more comfortable on a 53.5-54cm (within certain geometries). I currently own a Ridley Helium in a medium which is like a 56.

I have the bike setup to fit me and it's not uncomfortable on long rides. My question is...

I have a long ride tomorrow that is mostly climbing (15 miles up 4000' and another 7 up 2000'). Would it benefit to slide the seat up a half cm and throw a 172.5 crank on there? (I typically ride with a 175)

I've got the crankset here in the garage and it would take me all of maybe 30 min to set it up. Just not sure how much the shorter crankset would help, if at all.

Thanks!

-Sean