Well, I have some good news and bad news.
The good news is you don’t “need†the $10 iridium plugs, in fact some ppl swear by the $1.50 Autolite 606s. For stock GT, you can use any plug you want the only difference is longevity. Check that they are set to .060" for anything you put in.
Also, if you figure out a way to change your fuel filter let us know.We’ll talk you into taking some pics and doing a write up on it. Like I mentioned before, I wouldn’t worry about the fuel pump or filter atm.
Missing from your list is a gallon of Dexron 6.