Cam Suggestions

Well I finally got a new job and I start saturday. I am so excited about paying a little more attention to my Darts, rather than just driving the crap out of them and praying they stay running. The 318 in my 72 4 door has a bad cam in it (3 lobes almost gone) and im in the market for a cam.

The Motor is 30 over with a 4bbl intake off of a diplomat, Edelbrock 600cfm carb, and heddman hedders. I has MP chrome igniton and a holley red fuel pump chained to a holley hi volume mechanical pump. (p.o. had it set up for spray)

Im looking for a good grind, but not too excessive as to require new valvetrain. It has stock rockers with new springs and valves.

The motor is starting to get a little tired, but still has 140-155psi in all cylinders. Im not sure on the comression btw.

Any ideas on a hydrolic flat tappet?