As said it's all very easy on the D2, even the fuel filter. When I changed mine I didn't even jack the car up and it took about 10 mins
If you keep all the receipts and mark up the service book with the mileage, date etc, I think that would satisfy most prospective buyers of a car of that age and mileage that the car had been serviced regularly, and if as said you use TPS parts, they will be OEM parts which you may not get from sending it to an independent.