In all honesty, I would pay a certified pro. If you are willing to pay some random forum member that may or may not have a clue as to how to set up things properly, you are wasting your money. I'd rather pay a professional with a good track record of quality installs.
Having said that, I see you've gotten an offer above, give the man some beer and watch him work. If you aren't happy, then you didn't waste any money, kinda.
