I think one thing to consider to when searching for a training facility is the kind of equipment they have available. Make sure you think out what kind of things you want to do with your draft and that your plans work out with the facility's utilities so to speak.
That and they there is a trainer that suits you as well in case you decide you need assistance with something.
Well, he's finally here! He celebrated his first day by jumping out of his paddock (yes, he's a Friesian who likes to jump:P). I can't really blame him though: his pasture buddy-to-be got him in a corner and started pounding on him. Of course, he did this AFTER I'd been watching for 2 hours. Not 15 minutes after I got home, I had to drive right back to get him sorted out and checked for injuries (none the worse for wear).
So he's in a stall at the minute and will be on ito for a week or two before we try him with another horse again.