Attached are some FS9 52-week plans for the Okanagan GA package, together with revised CFG entries for the Cessna 185s to clarify whether they are on wheels or floats. In the 52-week plans, they change with the seasons.
If you don't use the 52-week idea you will need to pick a set of plans for the summer months, and a standby plan for the winter months, and swap them back and forth. Winter is start October thru to the end of April, when the lakes are frozen and floatplanes would sit idle, and a few amphibians will move to wheeled versions in ice season. One aircraft moves from wheels to skis as well.
I've included the texture folders for the repaints, and these can be copied over your existing ones (the textures are not changed, but there are some now that are used on both wheels and amphibian models). The CFG entries have revised aircraft titles to make plain for the flightplans which is the wheeled and which the amphibian/ski equipped aircraft to use.
These revised titles are used by the flightplans, not the original ones.