Its going to be as cheap and likely easier to have Nick at MHS do them. Plus if your cores are in good rebuildable shape you can get a little $$$ back for them.
Is your bottom end built yet? If you can get that Termi motor/trans that is going to be your best $$$ for the buck honestly. See how much he wants for just the motor if your trans is in good shape. If not, get the T-56 too.
If you do not have a built bottom end, just throw the cams in and go. If you need a rebuild, you can always do what I'm doing and find a cheap Vic motor and drop it right in.
2000 Mustang GT Steeda build #48. Bolt ons, suspension, Novi 2000.
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.