Smallblock Heads Help

I'd need a better understanding of " heavily ported ' to give you an honest answer.
Flow numbers measured in cubic feet per minute at a given valve lift are what you start with........example shown above ( 250 c.f.m. @ .500 ) is typical of a well ported J or X head and are pretty stout for a streeter.
I have seen better numbers , but not by much and variances in flow benches may account for some of that.
That being said , quality of flow vs. quantity is far more important to efficiency ( performance ) and big flow numbers are not always the prize at the end of the puzzle.
With that cam , a 2.02 valve and good valve job , coupled with a gasket match and pocket porting would really wake it up.
You'll want to keep runner velocity as high as possible , so a max'ed out port job is not the answer unless you plan on spinning the motor pretty hard.
If driveability and manners are important , you would look for other flow characteristics and enhance them.........low and mid lift flow for example.
It it were a truck or heavy car , I'd look at keeping the small intake valve and maximizing torque via increased intake charge velocity.
You will almost certainly lose some bottom end by going with the big port job and valve.
Make the parts you have work together and you will be a lot happier........a small cam doesn't need a big carb or monster flow numbers.
Forget that a motor is nothing but an air pump for a minute........O.K. , don't forget.......but think of it as a team.
make the parts play together as a unit instead of expecting one to do everything. I have seen crazy stuff from small valve / small carb combinations that took very little porting and cash.
355 Chev with a small hydraulic cam and 650 carb that a friend of mine did made 425 h.p. on pump premium and over 600 with spray ........nothing exotic about it in the least , but everything worked well together.
It idled and drove like Grand Ma's Biscayne. :D