Honestly, height-wise I would be concerned about pairing you both if your plan is to jump and/or event. I'm 5'5" and training a super fat pony of the same size. While he could carry me through cross country or jump courses (eventually) after much fitness work, I would still be at a disadvantage compared to other riders. You have a shorter stride, a smaller engine, and you have to consider that when he's actually fit for a proper gallop, he will slender up. Any amount of excessive muscling drops when training for these sports.
Secondly, congrats on your weight loss. It looks like you're well on your way. But while you're on your way, consider that studies have shown that horses tend to top out around the 30% mark. That means any given horse can carry up to 30% of their body weight (rider + tack) before it affects their gaits. The smaller the horse, the less the horse's weight, and the less the horse can effectively carry.
I feel you, though, it's so hard to pass up a pony or horse that's virtually being pushed on you. Just remember that they don't want that pony any longer, for whatever reason, and their main goal is to find it a new place, regardless of what's best for you. Tugging on heartstrings like that is a sales tactic.
Last edited by RedDunRoanOvero; 08-21-2013 at 01:41 AM.
Reason: typo :)