i spent 17 years as a ford tech(two master certs from ford)
i never did all that to change plugs on one of those vans(and i beat flat rate all the time when i was a tech),but if it works for you,it works for you.
now a bit of advise
before you remove any coil,take compressed air and blow off any debris that is around the coils,if you dont that debris will fall into the cyl head plug hole and will do one of two things(if not both)
it will make it a real bear to get a socket on the plug,and or it will fall into the cyl once the plug is removed.
if youve never seen what a little tiny stone can do to valves,head and piston.it would not be a good time to learn what it can do.
anothe rbut of advise
DO NOT use any anti sieze or the like on your plug threads or the WILL come loose in time and you will blow the plug right out of the head
jm2c on it
but what do i know ;)