Inbetweener
This outline is still a down the line design but can adapt to a variety of beach and reef breaks. It has the same trim speed in a straight line as the very full outlined point break design but with a shorter turning radius. The wide point is moved back and more curve is added to the plan shape to free up the outline making direction changes and turning back more accessible.
It is easier to ride in many conditions and can be ridden as a single fin ( usually with a larger center fin ) or with a smaller single fin and the side runners and a smaller center fin.
This design is ideal for intiating oneself into the concept and idea of the smooth planing modified displacement hull design. It is versatile and there is an easier transition from the flat bottom with "V", banana rocker, curvy outline, pivot, squirt and run concept of surfboard design.
The weight / length chart is a general suggestion depending on what length of board you are used to. Individuals are just that and may prefer longer and shorter versions of the same design ever though they be of the same height and weight.
Main thing is that you should be able to just launch the board, stand in trim position and the board should plane out at trim speed without any added impetus or gyrations on your part. That is the beauty of the design.
The smaller the board the more wave energy it takes to make it plane out. If you ride weaker waves you might want to go with a longer version to make planing efficent.