The beauty of what @anarxi says is you will learn how simple the inquartation route is, and it is also very scale able.
A 1 kg furnace is rated for 1 kg of pure gold so the quantities suggested will not fit in the furnace even though it is one kilogram. Inquarting larger lots in an inexpensive gas furnace is an option and parting the alloy in 1 kg quantities will be a good way to start.
