You could very easily turn that into a 12x14 and gangway if that is what you want. U might need one more float, but you would have less hardware. So it would be wash. That said I really like the look of the dock you designed.
I got my floats from Docks on Demand, they build docks for a living. The are in Benbrook, just south of Ft Worth, but might be worth the drive. It was for me. My floats were right at $4000 and I got 20 floats. I got my hardware from
www.dockhardware.com.. About 1400.00 in hardware.
You are right at 1/2 what I built, so you should be able to build it for about $3K
