Stopped by autozone today to get a more permanent solution to the vacuum problem, and to reset my CEL with their scan tool.
I scanned the codes before erasing them and am still getting the P0171 and interestingly enough, the P0102 or P0120 or whatever it is to show the MAF missing, even though I plugged it back in and have driven over 50 miles since then.
Drove home from Autozone, and still no light.
I still plan on changing the O2 sensor to an AC Delco part, as well as the MAF sensor. Hopefully this will finally kick this little orange buggers rear for good.