So after much though, anxiety and wondering if I am making a huge mistake, I dived in and purchased Aslan. With the timing of me discovering his advertisement, that he's been for sale for a long time and no one scooped him up, and a few other things, the whole situation makes me think that God was okaying me to go ahead. So I did. Hopefully my intuition is not wrong.
Aslan might not have as much training as I would like, but he is a lovely horse, we seem to have a personality match and I think I can manage this training thing. It won't be easy, it might not even be pretty at first, but we are a match and it is possible!