You might need those hours in the C182 before you contact dropzones. My advice is to be as prepared as possible, treat it as a normal commercial operation, but if you are not up to speed its hard to charge for it.
$5 per bum is a good one, and if you do it full time make sure there is some sort of retainer for the slow days! Its all about being fair, maybe a look at the award wages should be your guideline.
Jump flying is a lot of fun, you can learn lots, but dont push it...because they will try!
Good luck