Upload & Sell: Off
Thank you all for the comments!
Andy: I use a local pro lab in my area called Chromatics, although sometimes I develop my own B&W film at home, which isn't terribly difficult.
In addition to Grits' pithy advice.... As far as your exposures, if you're shooting B&W, its generally better to err on the side of over-exposure. If you are in a really questionable situation, you MIGHT get some benefit out of finding a skilled darkroom technician who can develop by inspection. This is very hard to do in smaller formats, but still possible with a very skilled tech. With development by inspection, the technician develops the film incrementally, observing the progress of the negative with a faint green light.
Hope this helps.