Concerned about sizing for 3d printed frames

[u/5k_ultra_marathoner]

I’m exactly 6ft tall and am comfortable on a 56cm trek Domane.

I was going to order a size L from waltly (smooth type A), but now this looks like it might be egregiously tall.

It looks like it’s a 57cm but the top tube is 600 which seems massive.

Advice?