Sorry I confused you with all the extra. Haha I didn't mean to!
The polish is not really necessary and personally I don't think it is worth it or useful unless you have a buffer...then it all gets more complicated on what types of polishes and blah blah blah.
The sealant adds protection just like the wax. Some people just use sealant over wax and vice versa. Some, like myself, use both.
Final answer..no, you should not need anything else.
Make sure you have enough towels to last, pick up some tire dressing if you want some shiny tires, tire cleaner, and obviously glass cleaner.
So the order I would use is clean tires and wheels, wash jeep, clay bar with detail spray, dry completely, dress tires (since they will need time to dry), wax on and wax off ( lol. ), and finally clean the windows. Done!
Did I confuse you even more?
I promise that it is not complicated. I unfortunately just like to make things complicated...I'm sorry lol.