Hi CT
if you have the inclination to re-commision the bike please do. It will cost more than you could sell it for, but you will have a bike with history.
An approach, if there are family problems is-
Agree a value that people are happy with, as it is now. Then document all the parts and services used and agree a nominal value of your time, before you start, (start by asking what a nail bar, hairdressers or garage charges per hour). When it's running get a valuation and share the profit (LOSS) among the heirs.
Your time, includes ringing around, going to autojumbles for parts, travel to take and collect parts from plater, dvla time, MoT for safety sake, trip to tyre fitters, time on line, etc.
Time = 350 hours? couple of hours midweek? a day at weekend? £20/hour? = £7K
Parts– At Least — Battery, tyres, Chain, Sprockets, Lamps, cables, Penetrating oil, Oil, Fuel, Carb rebuild, Club membership, parts book, MoT , Filter? or slinger?, = £500?
Parts — Possible– Seat re-covering, Wheel rebuild, Painting, Plating, Magneto rebuild, tank repair = Dont Ask.
Good luck
George
George