what valve seals after machining guides?

Im getting ready to send my heads to the machine shop for a valve job and have the guides cut down and have a couple questions.

First- max lift on the cam will be .568, now this is theoretical lift 1.6 rocker with .355 lobe lift so actual lift will probably be less due to the roller lifters and the pushrod angle, so how much should i have the guides cut down?

Ill be running the 1110 springs and 1286r retainers, measured retainer to seal clearance before the valve job is .540.

Second- what seals do i need to go with after having the guides cut? Ive searched and couldnt find much info on this one. Also based on this seal is there any other machining i need to have done to the guides for them?

If theres anything ive missed let me know. Thanks