This week I'm having my stage 1 kit, upper and lower intake gaskets, throttle body. water pump, under drive pulleys, and higher ratio rocker arms installed. I also want to put on new wires and plugs. I'm going to order Taylor wires tonight and I want to upgrade my plugs at the same time. I want to stay with AC Delco. What do I need?

The stock plugs are more than capable for your application.
The are iridium.