Pots, then transplant the next spring. If you buy seedlings, then you save a year, there was a nice article in Bonai Today that showed how to make flared bases and fused trunks by planting trees through holes drilled in to ceramic tiles. I will look for that one.
I read that one John, but don't recall which one. It's a very interesting technique that I plan on trying. I also recall Chris from Telperin documenting the same technique somewhere online.