My 400K was the same colour scheme
After multiple crashes (you can't kill a ZZR) & rebuilds, a 600D motor, new fairings, nissin calipers and a new shock.
Whatever you end up getting I'd then budget a rear shock in to it, even in good condition the stock shock was crap (the 14k mile shock on my 04 I literally threw in the bin), £240 on a YSS rear shock totally transforms the bikes handling.