Any question answered...

Are you really that strangely proportioned? Allowing for a proper length stem for your size, you're effectively asking for a frame 60x48, which is massively under square when normal people ride bikes which are slightly over square. If, after a professional fitting, it turns out that you really do need something that shape, then custom is probably the only way you're going to get something to fit and handle well.

thanks tester, but not sure I understand the 60x48 size, do you mean + a 150mm stem?

I'm 5'11 with a 33" and a bit inseam. My arms are thin but not noticably out of proportion (at least I dont think so)