Image Sampler + Circle Packing with Set Circle Radius?

Hello World,

Please see my attached definition and a screenshot as well. I am struggling to figure out how to have more control over the circles my image sampler outputs.
I am trying to figure out how to control the radius of the circles that are output. I would like to be able to have 3-5 set radius’s (small to large) that build up the image sampler composition. I dont know how to get the grey scale values to coordinate with set radius values.

I am stuck with only two circle sizes, I have tried to use a panel to create a the values that I am after but it did not work. Feeling stuck and would appreciate any help or guidance!

53%20PM|487x500 Tan Tan Image Sampler(Forum).gh (4.3 MB)