So I'm looking at the leader 722 frame and steel fork. I'm riding on a 52'' 2006 SE Draft frame which feels small. It's an odd frame, I think it may have smashed up geometry causing it to feel smaller than a normal 52''? This is currently how it's set up:



It feels okay when gripping the top of the bars or on the slopes, but in the drops I feel cramped up rather than stretched out. I have a PK Ripper as well in 56'' and it feels a bit tall. I'm ~5'9''-5'10''
My question is then, how does the 722 compare in sizing? The color I want comes in a 55'' but would that be too large if the pk 56'' feels big? I have my second color choice in 53'' but would I end up still feeling cramped, especially in the drops? Just looking for a bit of advice / input before I pull the trigger. Let me know if there is any more info that might be useful for ideal fitment.
-Thanks!