I wouldn't be too stuck on a particular breed. I would look through preloved, or another online site for breeders local to you and contact them saying that you would like to buy some weaners and could you come and see them please. Your under no oblagation to buy and usually the breeder will be happy to give you all the advice you need and you can see the adult pigs and get a feel for how well they are kept.
I've had, Tamworth, Oxford Sandy and Black, Welsh, Berkshire, Mangalitza and comercial crosses, all of them tasted wonderful. I found the Tamworth and Oxford Sandy and Black's were all so distinctive and individual it was hard to distance yourself from them when their time was up. I would also go for all boys, there is always a temptation to keep girls if you get too attached. Definately all the same sex and try and get similarly sized pigs so they all grow at the same rate.
I would wait until the spring as they will make a very big mess of any outdoor runs and unless you have the best draining soil it can become unhealthy for them
Enjoy them, their are wonderful