Creating density map from point data?

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I have point data, where one point represents one 1 storm water outfall, looks like this:



(point data is across all of Long Island, New York).

I am having a bit of difficulty finding the best tool to create a raster density map. Essentially I want to use a density layer in a weighted overlay model (an area with high density of storm water outfalls would be less suitable...). I do not think I need to use Hot Spot Analysis because I am only interested in high v low density and not if they are actually statistically different from each other. I also have tried point density tool but I am having trouble figuring out the inputs (like radius length and cell size, etc). Any suggestions would be appreciated!



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