RRMan,
Lutron makes a nice dimmer specifically for LED dimmable bulbs.
I have the 5000k Par 30, 65w. I find them harsh at full brightness. I do like them at less than full brightness. Still good detail (oops will show), but not like a clear summer day.
I believe a mix of the temperatures will provide the result that you want. I do prefer the daylight over the warm white for the layout lighting.