Update: vacuum lines replaced, throttle reset sequence done, drove periodically for the week and the P0171, P0172, P0174, P0175, and P0221 codes are gone.

P0102 is still present, and a new code P0302 (cylinder 2 misfire) has appeared, but that should be an easy fix.

I'll be replacing the MAF and hope this fixes everything!

Thanks for all the input
- Jon