the steering linkage possibilities start to reduce with a mini as you lose the distance to play with , if you are going to lay down to sail.
the Promo front end would work fine , but your feet are only going to be 250-300m behind the front wheel, and that means that the linkage has to bend and twist to much. That is why most of the LLM's have ended up with a direct attachment to the front wheel .
in a positive way it means that you have a really fine control of the steering , whichis exactly what you need in a yacht this small.
especially if you want to Race
I try to build 250-300mm of steering adustment into foot steering, which ive found allows for most body sizes and shapes.
I did build a kids steering mod to fit the LLMwhich moved the pedals back another 300mm and that fits most kids