changing gmail accounts

Changing Gmail accounts is not something I recommend... to anyone. OMG, it's been such a pain. My labels are messed up, my filters are messed up... my AIM won't log in... I used a prog I found online called Gmail Backup. It basically worked - but I have over 7000 emails apparently and upwards of 50 filters and labels. I think I overworked it. I had to delete my labels and filters and I suppose that could use an update anyway. I would have never done this, but I just got divorced and changed my last name. My email happened to be my first and last name @gmail.com. Peachy. So, really that's the only circumstance I'd ever do this. I also had to move my Google Reader and Calendar and Picasa, and create a new Google Profile. I know there's even more that I haven't thought of yet....