Thanks for the tips, I will not make any profit on these shots, many will be for my personal enjoyment, but I hope to get a few shots that will be used for marketing purposes...still for no profit though. I'd prefer not to use a huge flash mostly because of the attention it would get. I'll use my 50 1.8 more than my 17-40 with people because its lessnoticeable. I don't really need pointers on how to use external flashes, I know they will be better, I just want to make the most out of what I have.