Detail prop cylinder radius blueprint auto-placement on material

Need blueprint with custom selectable cylinder radius in inside auto prop percentage amount randomized placement on selectable ground material. Also selectable some custom small props and rotating with scale.

I did something like that in one of my projects. Check the screenshot bellow, the output after the MakeVector node goes inside the Location of the spawn logic of your props that you have. The random rotation of the props is very easy, so you will figure it out. Good luck with your project.