Just from the picture, and from what I've seen in the database, I'd definitely keep that big yellow near the middle. (Patio Parade?)
With a large property, I'd concentrate on taller, robust plants that stand up to be noticed as part of the overall view. Then I'd look for the most sunfast of the rich colors. Visiting daylily gardens is really the only practical way to find out what will look the best throughout the day. It's not usually the most expensive or the fanciest.
When I started collecting daylilies, I wasn't all that knowledgeable or discriminating, I think that's the way most people get started. Also, there were no nearby places to view a wide range of daylilies in garden situations. As a result, I bought a lot of plants by their catalog descriptions and images which turned out to be "also-rans". (at least in my climate)
Through attrition and a little culling, the numbers were pared down somewhat, but it can be difficult to toss a daylily, particularly if it wasn't cheap. I share quite a bit with friends and interested passers-by, but I won't share the "dogs", because that's no way to generate interest in daylilies. When I get a new plant, or divide one, I'll set aside a fan or two in 1-gallon pots just for gifts or trades.
My favorite plants to share are Vintage Bordeaux, Custard Candy, Caprician Fiesta, Bold Encounter, Walnut Creek, Quick Results, Cameroons, Cameroon Night, and Boney Maroney. They increase decently, so I always have plenty, they open well here, put on a good show, and hold up well in the afternoons. If someone wants a tall plant, I'll give them a piece of Notify Ground Crew.
I have a couple of favorite "landscaper" seedlings that go out occasionally too. A big tall purple UF from Thin Man x Cameroon Night, and a big, wide-open, sunfast tropical pink from Frank Gladney x Serena Sunburst that I probably should have named in the late 80s. (Oh, well...)