Do you have any pics?
I am 5ft7 and when I was trying out horses I went to see a lovely little arab mare who was 14.2. I didn't feel too big/tall and the ground was lovely and close
but when I saw the videos and pics that my boyfriend had taken off me on her I thought I looked too tall on her. My legs were ok but it was more my upper body. Since she was the first horse I looked at I decided to keep looking for something a little bigger but every now and then I wish I had put that aside and gone back for a second visit. As long as you are both comfortable then that's the main thing.