Stallion for sale? buy or not to buy?

[tttHeahetttt]

Hi I'm currently looking for a horse/pony.

It has to be something bombproof as it will also be used for my little sister who has learning disabilities.
I saw this beauty of a gelding but the owner decided not to sell. So now I have found the stallion.
He is everything from my dreams and the perfect height, and just everything I wanted.

But he's a stallion?
Is this going to affect him anyway?
I don't want to get him cut as I might decide to breed from him and he is such a beauty!
But what do you think?
http://www.dragondriving.co.uk/horsesnew.php?ddi=3

He is the second down it says...
14.3hh ride and drive stallion.
Oh and also do you think he could jump around 3ft?
He is going to be used for fun rides, sponsered rides and hacking and lots of SJ and some dressgae.

[horseyperson]

hi there
i dont think a stallion would be a good idear to get for a disabled person and they are generaly not bombproof, or a novice ride,