Turbo head build

Slant Six Bumblebee said
The rockers were just for the cam regrind because it would be a smaller lobe.

I am aware that it can get very expensive very quickly I am just wondering what the best use of my money is.

No, it's not a "smaller" lobe. On a regrind, the lobe can have more lift than it did before, the lobe is simply "moved" on the core. You won't need new rockers, but you might need new longer pushrods.