The 11 inch pedestals i originally had (which put the floor to bottom of seat at 13 1/2) work great. Center of gravity is absolutely zero issue. For while im fishing its all i use. I did get two 6 inch pedestals too. That puts my total height at i think around 8 1/2. And in fact that puts the seats right at the height they were on the benches. For my 5 foot 3 fiance up front with short legs, it just fits her better. For me, when i drive i put the shorter one. It just naturally puts me closer to the motor and to the side of the boat behind me to hold with my right hand. Driving slow or in calm water even at 28 mph isnt a big deal up high. Or in choppy water slower. But when its choppy and i want to go as fast as i can, the lower one just fits better for driving.
It is still comfortable fishing with the shorter one just as it was with the benches. But when you put on the taller one it just is way better. And it does zero for stability either way its okay.
Thanks for the kind words. I am so happy with it. It was really a big difference not having those benches taking up room and climbing over.