Street performance and Carb.

Hello there,
I am rebuilding my 273 4 bbl engine and wondering which one are better for my needs.
Of cource I can make test trial , but I know, You have more experience there.

I have Carter 4294S, light rebuild done during last winter.
I have also new eddy 500cfm on my garage.

Standard size engine, comp cam CL20-221-3 (Dura 256/268, lift.447/.445).
Original heads.
Original 4 bbl intake.
Flowtech headers.

Please give your comments.