Decking my Z6 want to make sure im doing it right.....

Well I am going to deck my head after i port and polish the sucker and im only decking it to make sure its flat and not alittle warped just because i want it all to be correct.....anyhow i was told no more than .008 in maximum on the head. This is going to be for my mini me head swap so i just want to make sure im doing it correctly.
Please let me know Dosent need to be asap since i still have to do the porting and polishing and some more cleaning to the head but besides that I just would like to know a good clearance to go with since i dont want a high compression build to where id need to buy expensive fuel i still want to run on regular and sometimes more but yea just let me know
Thank you
Please let me know Dosent need to be asap since i still have to do the porting and polishing and some more cleaning to the head but besides that I just would like to know a good clearance to go with since i dont want a high compression build to where id need to buy expensive fuel i still want to run on regular and sometimes more but yea just let me know
Thank you