Hey Doc the pedals look tight on the board in the photo, you will need space for the jack leads each side of the pedals. Does the 16 pedals you say that fit allow for the leads ?
I'm pretty sure that there's enough space left for jack leads, I'm actually not going to be using all those pedals on the board once I've got it properly set up, I was mostly interested in seeing how many pedals I could fit on it when I took that pic.