1) Shampoo - Mother Gold Series looks good. There's alot good one in the market but I think since u wan to do all those sealand thing, dun choose wash wax first. Well, It seems like u don't have a place to wash ur car. For first started, no problem and just go any place to wash. After u did everything, please be more selective on the car wash shop else u waste all ur effort.
2) Clay - Cheapest brand for this is PG Clay. Search the Utube and see how they do this.
3) Polish - No idea, I want to try others also. Now using Soft99. Just mehhhh....
4) Sealant - I'm using PG Sealant. get the small bottle 1 will do. But while u do it, remember to buff off completely.
5) second layer wax or sealer - U can also apply second layer of PG but after the curing time. Forgot how long oledi. See manual. After u done with ur sealant, Put on Detailer. Sealant can't realy repel water. Not so nice but still better than without sealant.
6) Detailer - I'm using Sonax Brilliant Shine. I can say it's alot better than the Megs Ultimate Detailer.
After everything done, if u want u can get some wet wax to apply (few hours later after u apply detailer). U put under the hot sun so I can say not so lasting for wax. Well, u can apply every week. No problem.
If u going to the car shop to wash, just look carefully if their solution rip of the wax. Some of the shop using washing powder and some use acid to wash ur car. Effort all gone after get wash like this few times.
Good carwash shop like those using Megs should not rip the wax.
Sorry for the messy writing. Hahaha