I'm the exact same (terrified of clowns), and I actually ended up getting Pietro. I turned out to love him, and will likely keep him. He's super sweet and that makes up for his clown thing.
I'd say red vs blue. :) I feel like red vs orange would look really great in the fall, but I'm not sure about the other seasons (I think about this stuff for some reason idk).
They're a bit too busy for my tastes. I'm more into simple colors and patterns, but paths like that are also quite popular! So if you really enjoy them, keep them. :)
I want to see a new collectable for the museum, such as gemstones. I'd also like to see the relationship aspects improved with your villagers. More things to do to pass the time would be a welcome addition too, as the passage of time in the game can get boring if you aren't time traveling.