Step one, post in the hunting forum.
Ammo: Surplus M193 or Q1313A has been proved to be an effective pig killer. I also believe a commerical hunting bullet (60 grains or heavier, the lighter bullets may be too explosive) should give you the penetration you require. I'd leave Wolf at home.
Clothing: Check if there are any hunting regulations, as a minimum amount of blaze or dayglo orange. I doubt this is the case. Dress for a hike, dress for the conditions, be prepared for it to get colder than you think. Being cold isn't fun.
Taking the shot: Aim for behind the shoulder to put one through the vitals. If you have a guide/experienced friend, ask for his advice on shot placement. Im no pig expert, but a blown up heart makes any critter dead. Take shots at ranges you KNOW you can place it where it is needed. Don't try to test your newfound long range shooting skills in the field.
Cleaning: Claim ignorance and make your friend do it. Offer to hold the light if its after dark.