Just convert what you mine or don't.
Everything that is set to convert is converted to BTC then to the desired coin so use the profit estimates measured in BTC/GH/Day to decide what is consistently most profitable for your cards.
Yes, but I want to know the transaction fees for each conversion to and from BTC as well as the BTC rate function. For example, if the BTC rate function between coin BCT to coin x is 90% of the lowest price in the past 24 hours minus 0.05% minus 0.05 mBTC, and the conversion from BTC to coin Y is Current price minus 0.05%; then that is what I want to know up front so that I can choose coin y since it will always have less net loss in the conversion.
The whole point of multi-coin-mining and auto-exchange is convenience, but I have the feeling the entire process is loaded with tiny fees that all stack up to a huge cost. And maybe, in a cost benefit analysis, has far more cost than benefit.