Hi Jay,
Looks like you're on the right road there and some great products... Jetseal 109 is superb stuff, never used 50/50though ... and the order you're doing it is fine..
Regarding removing old wax, claying will remove some of it but not all, however your machine polisher will remove it all...
The shampoo you're using is fine - AG products have a good rep...
Only thing I'd say is let the Jetseal cure before adding anything on top... at least 24hr, also it's recommended to use 2x coats of Jetseal, if you have the time use 3 coats ( it does make a difference )...
To prolong the finish and all the hard work you've put in, it would be worth getting some Dodo Red Mist and apply that after every/everyother wash...
Good luck with the detail, it'll be worth it...