Nick did set the heads up completely from machine work to springs and retainers. He set everything up for the .750 lift comp roller he had ground for the last motor. Not sure if the retainers are correct for the higher lift. I do know I would have to go to the next comp spring to get past the coil bind. Maybe it's best like you said to have them looked at by a pro.
Okay, if you already have a complete combo designed to work at .750 then I'd bolt it together and run it. It might make the power that you need and it might not but you might as well try it. Run it a season and then you'll know.
