Chase,
As far as presurgery, I don't know if there is anything in particular. But before and after surgery, eat a well balanced diet of only nutritious food such as chicken, fish, eggs, milk, etc. for protein, fresh fruits and vegetables, whole grain products etc. Eliminate junk food, especially sweets. You might want to buy whey protein powder and have a protein drink every day. This will help ensure that you are getting enough protein, and whey protein powder is easily absorbed into the body. It really helped with my son's healing.
Use this time before surgery to buy the vitamins you will need. You will want a good vitamin and mineral supplement. I bought our supplement (which we all take daily) at GNC called "Ultra Mega Gold", which my son took. It is the only good vitamin I have seen that is timed release. The amounts in it are excellent for Vitamins A, C, D, E, Zinc, etc. I also gave my son extra Vitamin C. You will want to be sure you are getting enough Vitamins A and C to prevent infection, especially since you are having the closed method. Also, infection interferes with wound healing. (Of course, be sure you are not exposed to cigarette smoke.)
During the first week after surgery, the body is in the Inflammation Phase. I read that a person should NOT take any anti-inflammatory medications such as Ibruprofen, during this time. This information said that if someone does take an anti-inflammatory during the first week, the wound will not heal correctly. Prescription pain medication that your doctor gives you is fine, and is not an anti-inflammatory.
After surgery, you certainly won't want to sit. I brought a pillow and blanket with us in the car, so that after surgery my son could lay down in the backseat for the drive home.