Join Date: Aug 2009
Location: New South Wales, Australia
To be honest I'd probably recommend a pony over a mini.
A somewhat larger pony can be ridden by children/small adults (a great help if your horse needs exercise). They can also be kept more easily with other horses (less of a risk of injury from a large horse) and more traditional fences can keep them in. It's also easier to have them boarded places, and could be easier to sell on.
I guess I'd just wonder why you would want a mini for first horse. If you want to get into riding, going with lessons and then a good riding horse is probably the best path :)
However, as a disclaimer, I'm not a fan of minis, so my opinions are a biased.