With my small experience I would recommend going with someone that hand ports for the heads. I've seen ones that are computer cut and they look nice but a hand cut is done with the eye not the machine.
Bill at standard machine is porting my heads and they look great and I recommend him for any application. They(standard machine) also have a great relationship with comp and can talk to them and hook you up with a great cam for your setup. Believe me their mark-up is extremely small compared to other shops. They can also help with deciding the compression, bore for your block and the right pistons.
To put it simple they're nice guys and I highly recommend them.
I can give ya the #. Just pm me if you want it.
Jeff