Min.horse stud

Question
We recently purchased a min. pony for our three year old. Granted a three year old and this is her first experience with a horse I have however had horses before but this to is my first pony. He is a stud and is seven years old. We have allowed him to get use to his new surroundings at our place but he has been behaving horribly. He does not want to come to you he attempts to bite and kick our three year old, he will not come to you for his food but rather wait till you are gone then he eats. If you approach him while he is eating he will attempt to kick you. He rears up and thrashes around is very gittery when ropes are present. We have yet to put a saddle on him but want to geld him first hoping that this will calm him down at least a little. When we attempt to put the saddle on for the first time after being gelded how long should he be with just the saddle and lunge line and when do you know is the right time for a young rider to be okay. And how will you know when he finally accepts you and is not so hostile anymore.  

Answer
Hello,
First of all, the behavior he is exhibiting is quite typical of a stallion.  Studs are not the ideal child's horse, and when gelded at a late age, they also tend to keep many stud-like characteristics.
His behavior souns like something that needs to be dealt with by a trainer.  He/She can devise a plan for effectively training your mini.  Of course, trainers aren't cheap- So I would recommend the Parelli method (I've seen it turn the nastiest horses into the most well trained one!  It really works well!).  You should be able to find the "7 Games" on the internet somewhere.  These games should give you a good foundation to start your training with your horse if getting a trainer is out of the question.  The Parelli should start to work in about a week or so, but give it a month if you don't see results right away.  This should teach your horse to respect you- just what it sounds like your horse needs to do!
After he begins to calm down, you can then introduce the saddle.  You might not begin saddlework for quite some time, so just let me know when he's ready for saddling and we can go from there.
Good luck!
~rb