I have discussed drilling a Gixxer top yoke with YC on here for when I swap my forks to the USD front end I have bought. The idea he has suggested is a set of shaped plates bonded to the bottom of the yoke to help spread load and prevent the bolts ripping out under hard use. Combined with my custom risers, this should give a good support to the low weight yoke.
Currently I have fitted a Naked yoke from a K4 and that has a tubular section that the bolts pass through as part of the casting. It is more substantial than the S yoke it replaced, but not by much
It is possible to run standard S cables and so forth, but they tend not to run as smoothly or look as tidy as replacements. I run a V-Strom clutch cable, custom throttle cables and extended brake lines. I have also extended my switch gear wiring to allow for the turning arc of the wider and higher bars.
Good luck and why not run a thread of your progress?