Questions about this 360LA combo?

Agree with AJ and most others
with stock bottom end and stock heads 256 degrees .006 cam like the Lunati 001 for a 360 (less for a 318)
mill the heads (a bunch) and you can go 260 with 360 or 256 with 318
anything else is going to take pistons and I recommend the KB dome quench pistons for stock heads
do the bowl thing yourself as you are going to be changing springs
but first
step back and baseline as others have suggested
post a compression test
270 cam- or the 340 cam dog below 3000 with stock converter and gears and compression
you will feel flat then the motor will "come up on the cam" ok for a stick light or sports car- not so fun after awhile in traffic