Re: my exhaust system. will it be ok?
You will have NO pulling power with that set up, way to long and way to much back pressure with the cat. muffler and the lawn mower muffler combined, but if you dont care if it will pull itself up a hill without you having to pedal it 2/3 of the way it should be just the way you want it to be, just a small amount quieter and lots of power loss.
Good luck with your efforts.....