just a suggestion: take pics of the scratches that need to be repaired. get it repaired and when u intend on selling the car to an interested buyer, point out that your doors are painted you can show him the pics and tell him honestly that it isnt major accidented and you had it painted to get these scratches out... as long as it hasnt had any major accident, i dont think it makes much of a difference to resale...
P.s. do get a good paint job done cuz if that isnt done right it will definetly spoil the look and resale of your car...