Wouldn't go to Aberdeen for fuel very expensive landing fees.
Another route north is refuel at perth ( shuts at 19:00) then route up the A9 to Inverness then make your decision about continuing (closes at 22:00 but check they don't close between 18:30 and 19:00)
Inverness is 11.50 landing and 2 overnight park.
I fly the A9 route about once a fortnight and you can nearly always get through VFR but it can be bouncy.
If you need accom and a lift give me a email and can put you in contact with a lady in Nairn who will do it for 20 quid a night.
Regards
MJ