I've agreed to make a Dragon Rapide ( or it's sister plane) next as it's a lot easier than it looks at first glance.
I could do a Sea plane. But to be perfectly honest as your state side. It would be far simpler to go down the Ertl diecast money box route.
I've two different Ertl versions of their Grumman Goose. The one in the 'Cutter's Goose' livery .was originally the Ertl Shell petroleum version in a red and yellow livery. Plus side coin slot is hidden under a flip up cockpit canopy. Downside quite low detail .
The Red livery is the Ertl, 'Wings of Texaco ' Goose. Plus side Good level of detail, Down side the coin slot is in the fuselage.
The third is my water lined Smér 1/48 Walrus. Plus side easy to get very chunky model. Down side very old style of plastic detail and moulding issues. If you treat Smér kits as a white metal kit you'll love them .If your expecting scale modeling quality then you'll hate them. The real plus is their chunky build. It's got a much better survival rate on a table than the Airfix version ( in fact in the UK you can get 3 Smér Walrus models for the price of one Airfix Walrus.)