Jason,
Here is a discussion from a couple years ago, about putting the L88 cam in a rectangular port, high compression big block. There is some good info in this discussion.
Yenko.net discussion of L88 cam in L78
Keep in mind, if you are building a low-compression big block with oval port heads, you're likely to exaggerate the negative characteristics of the L88 cam.
I think Rob's suggestion of the 143 cam (that is the stock L72 / L78 cam)is a good one, you should get that lopey idle but still have some good low-end torque, which is what you want for street driving.
Good luck!
-Sam