As the title states I'm wondering if buying BTC using cash at a Bitcoin ATM and sending it straight to a market would be to0 risky. Unfortunately I don't have the luxury of time to use a tumbler and would like to catch HoS before she goes on vacation. Think this would be too risky?
My personal opinion is that if you don't have the "luxury of time" to take proper security precautions that you even acknowledge you should be taking, then you shouldn't have the luxury of using the darknet markets. Cutting corners isn't ever a good idea.
However, chances are you will be fine.