Crye SPC

I'm looking for a little advice on a plate carrier and armor plates. I'm 5'10" 200lbs and 43" chest. For a Crye Precision SPC should I go with a large PC and medium CB? New to plate carriers, appreciate any help.
I'm 5'10, 170 with a 32" waist. I use a Medium SPC and the small CB with it is a perfect fit.

I had originally purchaced a Med CB and it was way to big for me, as it sticking out the other side to get it tight enough.