If the new panles you have are in good shape and need no body work, all youll need is a couple pieces of 400 grit wet dry, 1 red scotch brite, wax and grease remover, a roll of 3/4" and 2" masking tape, masking paper or newspaper, a 3$ plastic drop cloth, the base coat and the clear coat.
First scotch brite the door jam of the new door(assuming its a different color than the rest of the car.) tape it off and paint it. this will be practice for the outside of it.
Next prep the outside of the car. If it was me I would blend onto the rear door and the hood for a good color match,(very little extra work and not much more in materials)
You will find the paint code in the glove box or on a sticker under the spare tire cover. should read: bc cc WA####
Once you get the car sanded and taped off, you can start spraying. Start by spraying 2 to 3 medium coats on the new panles to get it up to color, then spray 2 to 3 fog/mist coats blending out to the adjacent panles to make an even blend. You dont want to spray to the very edge of the good panles as this will ruin the blend and might show color diffence. Let your base dry about 10 min between coats( if the air temp is 70 or above) If air temp is lower let flash longer. let the base dry for about 20 min then spray clear coat. 2 to 3 coats is suuficiant, let flash 10 to 15 min between coats. then youre done. let cure 24 hours then if you want you can color sand and buff.
good luck, shouldnt take more than a weekend i would imagine