Looking great with the list!
Just be sure that the coils are by application. I went with the AC Delco coils only because that coil type has a few applications. GM has a specific P/N for the LT5 coil due to it's placement on the motor.
The plugs are a personal choice. Remember that the 90's have flat seats in the plug holes and use a washer. You can use a taper seat, precious metal plug but you have to over T/Q it to create a tapered seat. I stuck with the AC Delco 41-602's as they are the replacement by application for the FR2LS's, flat seat w/washer.
This is just MHO.
Tom
Yes on the coolant 1825-M spec is the GM spec number, P/N 12378560. Use a GM T-stat also! If you have to buy other coolant, make sure on the label it says "Do Not Mix with DEXCOOL" or "Do Not Use in a cooling system requiring DEXCOOL." that's a dead give away that it's 1825-M GM spec coolant.