Nice build Staitdown (hows the etek working by the way?) the only thing(s) possible to upgrade are the NDZ ram, vertical adapter (i have the 15* on mine), and the NDZ Ported manifold.
Looks good but try to find a Stainess Steel freak kit. I love them. Aluminum and SS works the same as far as performance goes but I used to put them in my pocket when I know I have different paintballs (we used to buy a ton and share them among the group and it was nice to quick change the barrel bore for a few games.