Building a 360, new cam, pushrod length?

My project is a mostly stock 360, punched 30 over, w/ new stock dish pistons. New summit racing cam is 484 duration 480 lift. I'm planning to mill the heads (along with new valve job) .030 or .040 for a little extra compression. My heads are regular 360 with the 188 valves. Do I need to worry about pushrod length?
Thanks.

PS - I also plan to get beefier springs to match the cam as recommended by my machine shop.