There must be a million ways to obtain donor parts... It really comes down to what you want. You could sell a whole bunch of parts off your car, I've sold $1,943.74 of parts off my $1850 Copart roll over donor. The only good body panel on the whole car was the left rear door. I would guess that you could double that from a clean donor. However it takes time and effort. Both disassembly and the individual sales of parts take time and energy.

There is no right answer... If it were me, assuming that your car is worth around $6-7K and that maint is up to date (relatively fresh timing belt, water pump, good brakes etc...) I'd use it as a donor and sell off the parts. There is no reason that you couldn't get $3500-$4000 from parts sell off.