Thanks again all for the information!
All of my travel will be booked through the company concur travel system, which I believe is or used to be American Express travel. Either way I can't book my travel with a personal card. I have a corporate card, but that doesn't benefit me other than not paying for anything personally. I will probably get the AA credit card for non-work purchases and put my monthly personal expenses through that and just pay off the balance each month. I'm still working out being able to break my work expenses off so that I can put them on a personal card and be reimbursed for them. That used to be the way it was at all times, but now that I have the company card I've been told it's best to put everything there. Of course I'm not sure if that's best for them or best for me
I have already joined the rewards programs for Hyatt, Hilton and IHG. I will probably join the rest and then try to stay primarily in one or two of the hotel systems. I've primarily stayed in Hilton properties in the past, but that was because our other facility was close to a Doubletree and I spent weeks there. I'm trying to get myself in the mindset of just sticking to one or two groups for hotels and primarily AA for flights.
I've actually never flown AA out of Philly. I always stuck with United because that was where I started flying and points were, but I'm sure AA is as nice. Just knowing that I'll have a lot more options for flights makes sense to me.