Chris,
I would talk to a camshaft provider to optimize what you need. Bear in mind that the space cam inside the MFI pump must match the camshaft profile and the person doing your pump should be consulted, as well.
For reliable 8K operation, you must do all the oiling mods to the lower end as well as install good valve springs & retainers. RSR rockers are not necessary in your situation.
I would also use Pauter rods for durability.