How much P/V clearance do you have?
How much retainer to lock clearance do you have?
How much valve spring do you have, or can you get?
How tight are you going to twist it?
Verify compression ratio before ordering a cam.
You have enough gear and converter to use fair bit of cam if the compression is what you think it is, or a bit higher. I'm running 11.01:1 on pump gas with iron heads.