Body Panels?

I'm sending my dart in for all the bodywork that it needs in a few weeks, and I was curious if it would be cheaper for me to find and buy the body panels it needs myself or if it would be cheaper for the shop to do it. I'm getting it blasted and painted, for metal work it needs new quarters, trunk exensions, a new floor w/4 speed hump, and some patches here and there, and the top lip on the inner fender where the fender bolts up to it could use some love. Also needs new bumpers front and rear since the chrome is all sorts of messed.

I know rockauto has some good deals on sheet metal (quality not withstanding) and then AMD has some of what I need.

And here's some random pictures just to make things more interesting.