You really don't need the EGT function with the EMS, I'ld settle for the UEGO, and MAP setup, thats all you're going to need. You get the right mapping and looking at EGT's won't matter.
there is a WRX locally running an EMS, which has put down some pretty good numbers.
Tuning an AEM takes a LONG time for a street car since there are so many different maps in it. Decel and accel, all sorts of correction maps, cold start. It will take about 2 weeks, not a couple of hours to get it perfect.
congrats on the purchase though, once you get it right you'll be amazed with it.