Capita Slush Slasher 143 vs 147

I am 5’11 and 155lbs. Would a 143 be way too short? I’ve ridden short boards like the gentem stick rocket fish and the yes 420 and enjoyed them.

Want to use it as a fun screw around around board to rip carves, do sidehits (maybe throw some 3’s) and do some wacky presses/nose butters. Already got a powder board so it’s use for that is not essential.

Worried it might be just too unstable at 143 but that it might lose a lot of its fun at 147.

Cheers dudes.