My opinion, which Gessford STRONGLY advised me to do:
Break in the cam without the inner springs. Run the motor 20-30 minutes at 2000-2500 rpm. Drain the
oil and change the filter and re-install the inner springs.
I did not change out my springs right away however. In fact I put a few hundred miles on the car before I did. I figured PLENTY of time to break in the cam\lifters couldn't hurt! I just kept the rpm down until I had the inners installed and the motor was "broke in".
Once you put the cam lube on the lifters/lobes don't wait to long before installing and starting the motor.