Motor turns over but hasen't run since being garaged klms 47,000

Had a new crank fitted back then.
Gears all seem to select ok by hand
I would suggest a complete strip down and rebuild of the motor.
Paint all original and is in quite good cond for age 6/10 would run with that like it is, tank all shiney small rust marks only.
Master cyclinders would need rebuild and so would calipers wheel bearings and swingarm bushes.
With all the above work needed doing you would also paint the frame, yokes, rims, calipers etc.
I think he wants to much considering that its not running, yes its a good example of an unmolested machine but she needs work.
As I haven't bought parts for these in years I'm not sure what all the above would cost, as there is no painting of panels all the work I can do.
Would $4000- be about right?
cheers