Skint

Found a mint 1999 Fazer... its got 17500 on the clock.. I intend to put big mileage on the bike about 40K, lots of motorway work.. Will the engine last? for how long?? How easy is it to self service?? How easy are the vlave adjustments?? Will the fazer last english winters and the road salt, is the corrossion excessive..? Are the clutches easy to replace and obtain parts for??