Ok any other q's just ask or send a PM. It may also be worth your time to have a look on detailingworld.co.uk some fantastic detailers on there and great advice.
Main thing to consider is least amount of contact to the paint work either by washing or drying = lesser swirl marks / marring.
Also if you get most of the surface off with a pre-wash this will really help so i would suggest in buying something like a suds blaster or gilmour gun depending on your budget.
I myself & matt use sudsblaster. I am not sure what Dodger users but i can not reccomend them enough.