Valve spring recommendations?

75slant6 said

I bought a set of the bare heads but then I bought the valves from Speedmaster for those heads. So should I maybe just take the heads to the machine shop and have them measure the install height and recommend me which springs to buy?

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You'll need retainers, spring seats, locks seals.
.492-505ish lift? After the lifter angle probably more like 480-496 lift.
I would run around 120-130lbs seat and 305 -320lbs open.
Comp cam #978 springs are what I'd use at a glance.