Thanks all, appreciate the replies. The previous said this bike sat in his garage for 15 years before he sold it to me... plus the 1 year I've owned it done nothing.
Per the wife, selling my Kawasaki Versys and going to get this K75 up and running. Apparently 3 motorcycles is too many? Doesn't seem right to me, but I think I'd rather ride the K75 than the Versys anyways. Hopefully I can get it ready before this 2019 summer season. After reading through a few threads here, as well as the K75 repair manual, it looks like I'll need to replace all of the following without even bothering to check if they work (sitting for ~16 years, 26k miles). Let me know if I'm missing anything?!
Fuel system (pump, lines, filter, and injectors), spark plugs, oil & oil filter change, rear spline inspection, grease, etc., change gear and final drive oil, battery, check & grease all cables, check/change fork oil, check/change brake pads & fluid, radiator coolant flush/fill. Need to replace the bent handlebar and levers too while I'm at it.
After all that, was thinking of getting new exhaust, gauges, lights (head, tail, blinkers), seat, and maybe even a matte/metallic blue vinyl wrap on the fuel tank and side panels.