Fill under soil in front yard to support an ice rink

I'm looking to reduce the grade in my front yard. Each winter I place an ice rink there and the slope makes it more of a feat of engineering than is necessary.

I want to reduce the grade of 1" per foot to 3" per 10 feet. I had some extra yards of 1" clear lime stone that I've started to place to fill the grade. My plan was to continue with the compacted clear stone to take up volume for cheap without preventing drainage, then an inch or two of chipstone to help prevent the soil from filtering through the stone fill. Top layers would be it with 3 inches of yard fill and 2" top soil.

Is this a reasonable plan? Suggestions?

I've added pictures of the grade difference after some fill, the structural requirements, and the clear and chips stone.