Well the battle to fix these codes finally hopefully concluded yesterday. FTW
been posting alot the past week as I've been going about fixing these codes causing some engine trouble. In the end what solved it was changing out the injectors. I used a noid light after disconnecting the coil box and the light flashed which made me go ahead and take out the rail and the injectors and replace them. After driving her around to warm her up, waiting a few minutes then trying her again (as that's when the codes would come up) she started up great no problems. The sense of relief and accomplishment was so real after changing out spark plugs earlier in the week, taping up a wire, then finally changing the injectors I can say I'm now a pro at taking that manifold cover off haha.
For future reference for people who are tackling this problem this video was ESSENTIAL in guiding the process and highly recommend to get you started. What I would add that he doesn't do is PUT TOWELS in the cylinder holes in case God forbid a bolt or something falls in
But other than that this video was great
Thank you to everyone who replied to my posts the past week. I'm now getting 18.5 mpg even after driving her around a bunch yesterday which I don't think is too bad. I'm going to make a few videos documenting the process too.