360 LA Head Upgrade Question

Hi all, first post here. Have a steel head 360LA that the previous owner of my car had rebuilt maybe 15k miles on it. Pretty basic rebuild, .030 over with dished pistons and a Comp Hyd flat tappet .454/.454 110 LSA cam. Double roller timing set. Hardened exhaust seats. Has a Weiand action plus intake sitting on it.

Want to get rid of the cast heads so I picked up a set of 63cc Promaxx (SBM 171 2.02/1.60) aluminum assembled heads, I'm planning on raising the CR to about 9.5~9.7. Also upgrading to a set of Harland Sharp roller rockers, 1.6 ratio to get about .030 more valve lift. I don't know exactly how far the slugs are in the hole at TDC, but I scoped the cylinders and it's definitely not zero deck. Thinking I should be able to get a head gasket set to achieve my desired CR after I get the deck height measurement for the calculation. Will also be installing an Eddy Air Gap intake that came with the car.

So the questions on the plan.

1) Will I need to worry about any interference issues valve to piston with .484 lift on intake and exhaust?

2) The cam specs (Pn: 20-212-2) say good for 8.1 to 9.1 compression. Any downside being slightly above that CR?

3) I ordered a set of stock length "7.500" chromemolly ball & cup pushrods. Anyone think I might need a custom length?