John,
My suggestion would be that you start giving people a new email address now, and make the transition slowly, so you can get rid if that AOL in a month or two from now.........no use giving them your money for nothing.
You should consider getting a website for your company. I give everyone my email address from my site, so they send email to my website, but
I control where my email from my site gets forwarded to.......so, when I change ISP's (internet service provider) I just effortlessly change it on my website, and the emails get sent to the new address. My email address will remain the same no matter what.
Don't forget, you can use AOL's Instant Message system even if you dont have AOL. You can download the AOL IM software from their site at
www.aol.com