zrx 1100 swing arm talk

I just about collected all i need for my swap except the sprockets. the bike is a kz750e, with a 99 zrx 1100 rear end. im wondering is anyone has a suggestion on what size offset sprocket to start with. i know it might change but to get me in the ball park. also what sizes front and rear sprockets will give me a good ratio for running a 170- 180 rear tire.

last thing i need to do is to come up with a pivot bolt solution.

thanks guys