My advice to you from the sounds of your posts is you need to read as much as you can on the subject.
Get a couple of good books Getting started by Andy Case, The National Trust one by Richard Lutwyche or traditional pigkeeping by Carol ? (can't remember name).
Read 'Getting Started' section on GOS website
www.oldspots.org.uk or go on a course at Oakland pigs or somewhere nearby, visit a pig keeper in your area too. Remember its a big committment taking on stock. Visiting twice a day every day you have them.
Keeping pigs for your freezer is very rewarding, hopefully you'll break even and have some great meat into the bargain. Try not to get too obsessed about the cost else you'll end up cutting corners and underfeeding your animals.
HTH
mandy