what you mean by prep FM?
im planning on spraying the bay and the inside myself.
also the front and rear bumpers are already off as is the bonnet.
well have you got an electric sander?
you can go over the lot of the car with p320 so its all dull and you cant see no black.
all the edges the sander cant get to use p320 by hand or get yourself some gray scotchbrite pads.
any stone chips just feather them out slowly with your p320, will take some time but it saves dropping to p180 and leaving scratches, so stick with your p320 all over.
any dents?
ide say goto a bodyshop and ask them how much it will cost to mask up a car and spray it, no prep involved.
then ask them how much it will cost to prep your car, tell them any damage etc, and to paint it.
if theres a big enough saving to do it yourself then do it, if not, then just get the bodyshop to do it