"hoping for a more aggressive sounding camshaft"

I know what you mean, you want that "rumpety-rump" sound so you can impress the geeks at the local drive-in. I'm not dumping on you, I'm just saying that the geeks are the only ones who'll be impressed. With your near-stock idle, the savvy rodders will understand that you knew what you were doing when you chose that cam to complement your near-stock compression ratio. Moving to a cam with 280 or 290 degrees duration will move the intake closing point to later in the cycle and turn your motor into a real dog at lower r's. YOU MUST MATCH THE STATIC COMPRESSION RATIO TO THE INTAKE CLOSING POINT OF THE CAM to make a good running combination.

If you're going to insist on rumpety-rump, call up your favorite cam grinder and have them grind you a moderate-duration cam with an intake closing point that will complement your static compression ratio, but have them grind it on a narrower lobe displacement angle like 106 or 104 degrees.