Um, I wouldn't think you would need to change the coil packs or wires any time soon.
With the coil packs, the high voltage flows through a much shorter run than it did with a distributor - thus the smaller gage wires in our plug wires. The wires don't wear out the same way they used to and there is really no need to replace them until they start behaving funny or show visible wear.
I have 137,000 on my packs and wires with no faults due to them.
As for the plugs, I use the NGK recommended in the owners manual, bought from advance auto parts for like $2 a piece. I'm happy, the truck is happy.
Daniel