need info on my dove c heads ...want to use solid roller cam

what am i gonna need to do to be able to use a .640 - .700 lift cam

ive got the lifters

i know i need the heavier springs , but my valves do they need to be longer and as the guides go ??

I am running dove-c heads with a .649 in .642 ex solid flat tappet not the roller but I had to cut the valve guides for the higher lift I cut them to accept a .675 lift.Plus had to cut the spring pocket to accept the heavier and larger springs.Hope this helps I bought the cutters and did all my own head work cheaper than I could get it done around here.

any idea what any machine shops charge for this idea

All charge differently,you will just have to make some calls.