Getting a valve job recommendations

If they have a machine that machines like a SERDI they can do it all in one cut
top cut, 7 1/2 between the angles, second cut maybe half the width of the 45
ask what cutters they have
do blend the bottom cut yourself bottom cut will depend on what your bowls look like 70 may work or???
cut the guides for viton seals since you are doing spring seats
new valves?
ask PRH what his thoughts- mine are 40 years old