would it be more efficient to rent a sha256 or scrypt mining rig to mine this?
my test
2.5mh/s scrypt about 125dvk/day
6gh/s sha256 about 30-40dvk/day (some day over 100dvk)
200gh/s sha256 about 1300dvk/day
sha256 win
pay attention to time, if you stay at 200gh/s more than 6h difficulty increase over 20000, if you do 6h at 6gh and 6h at 200gh is the best diff not over 6000.