A great valve job cam make a huge difference in cyl head flow.

A lousy valve job can just plain kill airflow.

I.M.O., if you are going through the trouble of porting, unshrouding the valves/chamber work, having a great valve job can complement your work.

Since you are not going high lift, I would try & get the airflow early in the lift range & use a 55-60 degree cut under the 45 degree valve seat.

The solid carbide are the best for burrs.
I use them for various other types of jobs other than porting.
So, there are other uses for them.

I made the inlet radius with carbide burrs for my K&N filter to attach to.

Not using the aluminum elbow , just the velocity stack for the K&N

12 port SDS EFI