G'day, welcome from Australia!
I also came from a BIG horse background and I still miss riding. My dear friend has riding horses so I can still get my fix anytime I want.
The thing I noticed right away about minis is how small everything is! Little feet, little halters but HUGE hearts.
My little horses are the greatest pets I have ever had. I have had numerous dogs over the years, but I still believe that the minis are easier to train than dogs. I have my minis trick trained and Bailey is also trained for cart...which I taught him all on my own!
I can tell you love your little one lots, enjoy!
xox Leonie xox