Re: hello from marietta Georgia
First welcome to the forum, I too live in Ga. I have two 48cc 2 stroke bikes that perform very well, both are on single speed beach cruiser frames. One reason most choose a cruiser type bike is the larger spokes, if you are going to use the standard rag joint large spokes will hold up longer. If the bike you plan to use has a front disk brake that would be a plus, stopping a motorized bike can be a challenge. I don't think 35 mph going up hill will be possible, that's close to what a well tuned bike will do on flat ground with a stock 44 tooth sprocket. You will find a lot of people on the forum that get more speed but most have a been modified. So I say pick the frame you like and build from there, most people start with a basic build then add bits and pieces as they go along.
Your results may not be the same,Greg