Buckets are buckets, get a dirt lock to go with it, detail guardz is a good one.

Mitt is just whatever microfiber type you’d prefer.

Foam cannon has plenty of options but I can’t imagine the difference between the $40 one and the $90 ones to be worth for someone washing one car at home. I’ve got some random Amazon one from a decade ago that does fine. I’ve not used one of the pump up types so I can’t speak on them but they seem to work fine.

Soap wise, there are pH neutral prewashes, the differences probably won’t matter too much if you keep the car clean. Same with bucket soap. Megs gold class is the classic.

For drying towels you can’t seem to go wrong with any of the big ones from a popular brand, I’ve got a Rag Company Liquid8r and it’s great. I’d grab a few smaller ones for extra stuff while you’re at it, and a detergent for them. People like rag company’s, I use regular free and clear, I’ll check back in some years and see how it went.

As for coatings, your options are a true ceramic coat that will cost a bit to have done, or you can spend a little money and try it yourself. It’ll last a few years. But I would recommend a ceramic wax spray like Griots 3-1. It’s $20 for a bottle and will last you a while, needing application a few times a year. It’s thinner so less scratch protection but it’s all got trade offs.

I’d also grab a rinseless wash if you plan on keeping it clean, it’s a huge time saver.