Is anybody around using essential oils to add rich smell to their changa?

I recently tried make changa with IPA that was infused with Lavender leaves (my thanks go to Olympus Mon for inspiration). What I did not like about it was that changa ened up being "gooey", and it took a lot of time to fully dry. Im not sure why, perhaps I used too much Lavender and IPA pulled a lot of stuff out of it.

Then I tried the same procedure using clear IPA, and adding some organic Lavender essential oils, and results were good - clean evap and great smells.  So I'm thinking about using other oils as well, for example Palo Santo or Cedar wood. But before getting serious about it, I wanted to check does anyone have any experience with it. And is there any reason why not to do it?

Thanks!