I think Dino (blue board red wing) is on a 5' Kalama. Mine is a 5'10 115L SUP foil. I normally ride a 5'3" when the wind is good but this spot had a wind line you had to paddle out to a ways so I rode my SUP.
For the first part of your learning curve you'll want to ride the smallest (length) SUP you can find that you can stand on without sinking. After that you can move down to a sinker type small board, something similar to a prone foil (surfing) board.