Hey Sky Shark--I'm no expert, but it looks right on to me. Step at or slightly behind the CG, length of floats about 75 to 80% length of fusalge, tips about 2 in. beyond the prop arc, and trac, or distance apart 18 to 25% of wing span. Those look like "Sea Commander" floats, are they. I have a set of 42 in, Sea Commanders on my Four Star 60. Just love 'em. Not cheep and a little heavy, but they sure work great, and they are pretty strong. Tested 'em out on an oak tree !! (ouch) Totaled the plane, but the floats made it through without tooooooo much damage. Made repairs and put 'em on a new "Four Star" 60. And we're back on the water. Also heard good things about Falcon Trading Co. floats here on RC Universe. So, I just put a pair of them on an Avistar. And they work just great, too.
Good luck, you'll love flying off the water. Splash & Dash are the most fun. Trying to make the smallset splash is a challenge. By the way--Nice looking Harley in the backround.
Hope this helps. Get it on the water and have a ball. John Reade--Wine Country Flyer