Good luck with this endeavor.
Try to find a small local carrier. You don't want to work for them..
http://schneiderjobs.com/company-drivers/driving-opportunities/intermodal
I need to try OD someday.
Do not get a dpf truck.( Or EGR for that matter)
$20/ hour is about average if you really account for all hours working or thinking about the business.
Also check to make sure its really not getting air. You dont have a a gauge problem do you?