eg33 and megasquirt

[serioussubaru]

I am going an EG33 swap into a 1998 legacy wagon and I am planning on running everything with megasquirt version 2 or possible 3 if I feel like dropping the extra dough. I already have an engine, ecu, and megasquirt harness.
I've been doing a bunch of research at rs25.com but as soon as I asked ECU questions they sent me straight back to you guys.

Big this I want to work on is OBDII readiness and possibly CEL functioning. However I am not using any SVX wiring so some of that I might be going alone.

Anyways who has any experience at all with any of this and would be willing to help me out?