I agree with JRF about the positive features of the Tiger2. I would put one on floats in a heartbeat.

I built one for my son about 12 years ago, and kept the plans so I build an all-balsa version. It was sweet. It had the Best pilot figure I ever used: A John Goodman/Fred Flintstone action figure from K-Mart, sawed off about armpit level and glued into the plane. Williams Brothers pilots always looked like somebody who would get beat up on his way to chess club, but I digress.

If you have the Kit version: varnish the airframe, since it is all Lite-Ply. I love to use water-based polyurethane as a sealant.
Since it has a bubble canopy it will get fogged up so put a couple of breathing holes in the canopy floor. They don't have to be big, but it is important for air to be able to get in and out.

Mount your radio gear low and rearward. If it ever flips over, it will float on the wing, nose down, so a lot of the forward part of the fuse will flood. You want the radio stuff to still be floating out of the water.

One thing about Goldberg kits designed while Carl was alive: The tank is too low. You might find the motor leaning out as the tank empties. If you rotate the engine around to have the cylinder horizontal, you'll get better fuel flow. If you're too far along for that, a perry pump will fix it.