G'day,
I have had sucess in brining small amounts, the trickest part is weighing up small amounts of ingreadents a couple of tips to help you,
1 if using a salinometer pour the brine into a long skinny bottle to check salt levels
2 use a marinate injector to pump in brine they can handle small amounts.
3 put the meat and the brine in a large zip lock bag expelling as much air as possible seal the bag stand it inside a dish to keep it upright and give it a massage every couple of days
Good luck, one thing for sure if it works well you will be making bigger batches from then on
Damo