Re: First time here. Looking around the site.
Welcome to the forum. With your experience you should have no problems building a successful motorized bicycle. As for suppliers in the Atlanta area I can't help you there but all of the sponsors you see advertising down the sides of this page will be able to provide you with kits, parts and accessories.
Good luck with your projects and show us some pictures of your bike/s when they're done.
Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"