Absolutely. I’ve done 10k mile intervals with several naturally aspirated cars for years. Full synthetic and ext-interval filters. No engine problems.

Considering the exhaust leaks it has by now (if it was like mine at that mileage) if you have noise cancelling earbuds, go for it!

Tire plug kit. Did it several times when I was younger. They’re 💯 safe and will be effective. I don’t do it anymore only because the shop I get tires at offers lifetime patching for free. Yes–you need to do it or the air will slowly leak out giving you poor mileage, at worst a blown tire while you’re driving on the freeway.

Yes! The website Libgen.is had a free pdf of the 99-05 manual. In case you have not checked YT, I have found a YouTube video for nearly repair or maintenance required.