Maybe I'm wrong, but I thought the beans sit and age (or sort of ferment) then get roasted. Seems like fresh ones would taste pretty different without those steps. But, maybe it's that different taste that you're going for though. Does the fresh stuff taste much like regular cocoa?
These have already been roasted before we get them. They actually send us beans and semi processed cocoa in chunk form (not processed to the extent of what you buy in the grocery store - much denser) and this is the one i was thinking of using.