Those CBs are classic! Look for rust in the tank, leaky fork seals, and usual maintenance items like brakes and such. I had an 84 CB700SC, I loved it, I have an 84 CB650SC now. The 650 is sitting in the garage at my parents' house, I need to go get it so I can rebuild the carbs and I'm thinking about the motor too... my mum just bought a 599 so with the 919 space is getting short!
My 700S just after I got it:
And right about when I sold it:
