If you don't see more scrap in your future, or a limited supply of it, I would say have someone else refine it for you on a percentage basis. If you have a steady supply of scrap then you may want to try again using the methods outlined here and starting small.
Refining scrap yourself requires the proper tools, chemicals, and safety gear so don't forget that if you decide to refine it yourself you will have to pony up some cash up front for the necessary supplies.
Personally, I refine for others and myself. I get a great satisfaction out of turning scrap into pure gold and PGMs. There's nothing that compares to the feeling of holding pure gold, silver, platinum, and palladium that you have refined yourself. Refining to me is also very relaxing, it helps me escape my stressful day job and do Chemistry which I really enjoy.
I've always loved learning new things and with refining, I've never stopped learning since day one.
Steve