unless you are a giant you might find you’d have trouble lifting the front if you combined a mega long top tube with an almost DH slack head angle and long fork.
the front centre and wheel base on the large are plenty long enough. it’s clearly not an XC bike!
I’m 5’11” and would ride a small (if I liked them)
Good point GW
Not really saying it needs a mega long top tube but that one sounded fairly short for an 18.5. I am 6ft and my Mythic has an 18.5″ seat tube, a 24″ effective top tube, a 66 degree HA and with a 50mm stem this feels perfect for very aggressive riding, particularly downhill. I have had not had any trouble getting the front end up but admittedly it would be easier on a shorter bike. The point I was making is that there are some really progressive, slack frames coming along but I find a lot of them too short when in the standing position and that leads to an unbalanced ride (for me).
However I may just be a weird shape and it’s hard to tell on paper how it will fit so will be interested to try.
Looks like an awesome bike all the same.