Help a newbie coming from MTB..

Hey all, coming here from the world of MTB. I'm early 40s, used to ride a very pretty Haro with Skytuffs etc in my teens. My brother recently bought a BMX to cruise around with the kids and he's talked me into one.

I've gone through a bunch and found two used ones I really like the look of: - WTP Battleship - it's immaculate and a good price - custom United Zuin Miki, all the parts look high end but it's a little more scratched up etc.

I've got a Velo pump track and skate park just down the road, and a dirt pump track at the MTB park I go to. I'm keen to use these to develop some skills that will hopefully transfer across to my MTB riding.

What's confusing me is the geometry. The Battleship is a 20.75 TT and the Zuin is 21 TT. I'm 182cm and ~105kg (think powerlifter build with a relaxed diet 😂).

I love the Battleship but I've seen conflicting info as to whether this is going to be too small for me. Am I really going to notice 0.25in or could I run a longer headstem/bars forward to counteract it?

Thanks all in advance, hope these questions aren't too dumb haha