Everything is looking great, man!!!!!!! You are doing a great job.
It looks like you could have gotten away with a larger intercooler, but the one you have should work just fine

. As for using silicone in the headers it is fine as long as the matting surfaces are completely flat. If you end up with a exhaust leak after a few pulls (GOD FORBID) try a set of Remflex gaskets. Best gaskets, that I know of, for a Turbo application.
Turbos are water cooled? Nice!!!