It was all myself. Some of the finer detail work like installing the monitors in the headrests, I looked on Craigslist (
http://www.craigslist.com) under services and searched on installer.
I found a guy that installs alarms, TV's and such that wanted some side work for $15 an hour.
He came over and worked on the weekends installing monitors, the TV antenna, some wire pulls and helped cut in the PS2 and switcher controllers into the center console.
It was good having an expert around to help out.
Might be an idea for you.