I'd think you can do a Jetta with one pad, but you oughta keep an eye on it and clean it if necessary.
I too have heard so many conflicting reports about the VW clear that I don't know what you oughta expect.
But I wouldn't use a sorta-aggressive pad like the orange with a *very* mild polish like the #9. Those combos usually don't work as well as using a more aggressive product with a milder pad. If you get micromarring from the orange pad the #9 won't be able to correct it. IMO it's just not a good combo.
If you need the bite of the orange pad, use a more aggressive product, and follow up with something on a white pad if needed. So your second idea is a lot better IMO.
Wish I knew more about the Mother's Power Polish

I can't tell you how good it'll work for you, sorry. People do seem to like it, but IIRC it does a fair bit of concealing so some of the marring might appear to "come back". Don't know for certain though, and it's not a biggie IMO anyhow.
Oh, and I'd concentrate on the polishing, even if it means you only end up putting one coat of wax on. You can always add the next one after the next wash, which I often think works better anyhow. It's like most LSPs need a little time before you put anything over top of them.
Oh#2, work a limited area and inspect your work in different types of ligh (especially sunlight). In case something doesn't go well, you want to find out before you do the whole car. Pick a panel and get it nice so you know what works/doesn't. Too many people spend hours doing the whole car only to discover something didn't go right and they need to do the whole job all over again, very disappointing. Remember that this one's gonna be a learning experience.