There are many factors at play here. It sat for 9 years or more...where did it sit all this time...? Dampness works its way into the cylinder..and then you get cylinder wall pitting. Dampness in crank case...another can of worms again. As I said there is a number of factors to think about on if you want to undertake restoring it. Just be ready to put a whole lot of $$$$ into it, and you might find out that in the end its not worth all the time and effort and so on that put into it. In the end the call is really up to you. Myself...I think I would sell it....but then I have not seen photos of it and not had the chance to look it over to make that call...of save it or get rid of it.
The biggest killer of a engine is having it sit and sit and never run for a long time. Its often the death of engine in many ways...again depends on where it sat for that long...inside...outside...damp area...place where it got damp air alot...and so on.
This is just me. I would restore it, as have already done this twice ['59 BMW R69S & '79 Honda GL1000....both wrecked machines]. As ex-USAF jet mechanic [& always mechanically inclined since a kid], t'was a CHALLENGE and great Fun for me and I fixed many broken, bent items better than they originally were. It also taught me a LOT about the cycles, so I could tackle future problems without hesitation. At 75 1/2, have many good memories about both rebuilds; logged many miles on both machines; kept one [GL] 18 years. GOOD LUCK & HAPPY NEW YEAR... papasmurf