You didn't list which comp cams you installed. At least I didn't notice if you did or not.
Anyway, I have comp cams on my stang, stage 3. Idle is high, otherwise it stalls out when at a stop light. I've played a bit with the idle and manage around 1000-1100 rpm seems to be the sweet spot. Vac sits at around 10-12 I believe stock is 19-21