Let's say you would have something like a 'supercomputer' with enormous power, what bitcrack command would you use to run for trying to crack the puzzle(s) ? Would you use cubitcrack or even bitcrack2 ?
I think the best strategy is to use 2 computers (or splitting the power of the supercomputer).
The first one uses cubitcrack and you select randomly the keyspaces to check daily. Small keyspace portions to cover progressively the entire puzzle 66 range and without concentrating on few big portions.
The second one uses keyhunt-cuda in random mode to check the unchecked spaces between the first computer checked keyspaces.