its will be a good ride you should loose a little of the unstable tipping over effect once you have the power to break traction at will
& ride them like a sidecar you not usually sitting on the seat unless your on a long straight stretch ,
use the platform & your legs & lean like a swinger
u will find they are fairly stable at high speeds & high speed slides
while your modding if you can get the pipe as low as possible you may be able to lower the seat hight & make it more stable