My first try at wallboard was harder than it had to be, because I used too much mud (and had to sand forever).
For my second try, I hung the wallboard, but hired a contractor to do the mud. I watched while he worked, learned some tips, and have done a bunch of projects since, with fine results.
Hiring a person just to tape and mud was a lot less expensive than I expected. For him, it was a 1-hour job, with no clean-up needed.
At least make a call to see what you'd be charged in Philly. If the price is right, do the job the way your heart tells you that you should!