I think if you are goping to go throught the trouble and expense of doing it, youd be a fool not to use Bolivian leaves. Erythoxylum novagratense is 2-3x the cocaine content of E. coca
According to the other fellow, who did the write up on the coca teabag tek. 24g of HCl from 5kg of leaves from teabags to be exact. Coke seems to be one of the few exceptions to profiting from home manufacture if you can get the right leaves at the right price... maybe?
Anyone? USA needs coca tea!