well i was going to do a rabbi and stay out of it, but i think this thread has gotten a little out of hand ..

...
I think the OP should have asked his question a little differently ...
here's some facts I see ... he has product, he is going to use a rotary, which I'm thinking he must know how to use & he has just not done a Mercedes of this type, which most of us haven't either ...
my question if I was the OP would have been , "Who has worked on a Mercedes G series? " are there any tips, tricks or anything special I need to know to work on it? ...
as a general rule i do not offer pricing advice ... when Pockets asks me that question, and he's done it often, i answer a million dollars

... what i would charge and what anyone else would charge is totally different based on experience, overhead, geography, condition of vehicle ...etc ...
are there vehicles over some peoples knowledge and experience? absolutely ... even on my best day i wouldn't take on a fleet of cars, trucks , or busses by myself .. you need a crew ...I don't do pressure washing as it's not my gig, even if someone offers me rediculous money ..
do what you are capable and do it well ..
as Clint Eastwood as Dirty Harry said, "a man needs to know his limitations"
ok jumping off soap box