Mini Shetland Pony

Ok so i have been riding for 4 years and i really want a horse but my parents thought it would be good for me to get a smaller horse and train it. I was wondering between the shetland and the miniature which one is better to keep as a first horse (basically). I have the money for it. I can keep him/her at my barn there are other minis there. I was wondering which one is smaller because i wouldnt ride it because i know both are too small. But im 95 lbs and 5"0 But still growing so im not sure. Also could you teach both tricks?

If i wanted to go to shows which one??
Thank you and if you have eother if you want to include pics that would be great