With a $300 cement mixer, $100 worth of sodium cyanide and 35% hydrogen peroxide, $25 worth zinc powder, a plastic drum, some buckets, good fume exhaust (or, do it outside), a torch and dishes, and about $300 in other stuff, you could have gold bars in 2 days, at least from the pin stuff.
Another way for the pins is the sulfuric stripper. I would probably insist on a 20 gallon tank and a barrel plater to tumble the parts. A new barrel plater cost about $1500 and up.
Also, with a barrel plater, you could could strip electrolytically and simultaneously plate out the gold onto a sheet of stainless steel with a sodium hydroxide/sodium cyanide solution.
You may be able to use AP but I think it would be a huge, fumey, hassle and would take a long time to get the gold.
No matter what you do, it will cost you money and/or, a lot of your time. Those pins are very attractive. I think they could sell well on eBay. I don't know what they're worth but I would guess around $50/pound, more or less.