I am not a pig expert but have kept a few for meat. I would say it would not be cost effective to keep a boar for just one female, they eat a LOT of grub. A.I. would be your best bet. I borrowed a boar for my Kunes, the meat from Kunes by the way is lovely, but otherwise bought weaners. I always reared a couple for other people, they paying for the feed, straw etc. so that my own pig cost very little to rear.
If you are going to rear pigs properly then your meat will cost a great deal more than the supermarket or butcher, but it will be the best pork/ham/bacon you will eat. They will wreck your land though and are great escape artists, the land can be put right and going to fetch them from your neighbour is great exercise

If you have electric fencing this can be avoided.
Pigs are lovely, fun animals, go for it
