I'd get it running first. I installed a 98 KZP swing arm on my Z1because it is 1 1/2" longer than the stock one and is stronger. It made the bike more stable at a ton but my turning radius is much larger too.
I also had to extend my fender.
It gets to a point it will be like riding on a log as the early Honda 750's use to be. Going through the tight turns in Malibu canyon I'd make the turn and see the Honda in my mirrors trying to keep up. It looked like he was riding on a log.
My point is for every mod there is a change elsewhere as well.
Steve