Stay away from the CXRacing turbo.. I'm pretty sure it's the one that has a MASSIVE thread dedicated to it on SM... and all the shit-tons of custom machine work required to fix the flaws in the wastegate design and casting.. it's prone to shifting and the whole gate sliding...
T3 again says absolutely NOTHING. It's just a partial form factor specification and tells you nothing with regard to the compressor and exducer. Also you'll need to check where it's going to sit in the engine bay (once you source a T3 compatible manifold for the 7M or have an adapter plate built). Unless it's a freebie I'd start looking it over for some numbers and start doing some research... otherwise you may end up throwing $200 to $500 in the trash for the manifold/adapter and oil lines (and possibly another couple hundred if you need an external wastegate).
As for the BOV, unless you've got electronics in place to tune around it you're probably going to end up taking it right back out... The engine stalling or backfiring when you shift or come to a stop is not all they say it is.
So, if you're set on the BOV plan on another couple hundred for a GOOD fuel controller (which isn't a bad idea anyway). The stock BOV or even one of the tougher Bosch BPV's sound great when vented to atmosphere... I actually recommend at least venting them into the intake right behind the air filter though in case it fails and sticks open.