Hi... a person could try to run a circuit underground a long distance!

I want to put in a simple outdoor 4 way outlet at the end of a 160' run from my main power pole. The max. load draw on the circuit would be under 10 amps (and likely under 5a). I'm thinking of using 12/2 w/gnd. direct bury for this purpose with 20a recpt's. It's going to a short post near a fire pit for a laptop & 2.1 outdoor music set up. I've calc. I will only loose a little over 1-3vac so I should be good right? Thanks!
Tim