In an ideal world you could take one subject at a time, take the exam and move on to the next one, but the system doesn't allow it. I would suggest three at a time, 3/3/3/3/2 which will give you a spare sitting. If you do the larger/harder subjects first you could roll any failures over into the next sitting. With your experience I'm guessing you're just interested in 14 passes? It's probably worth smashing the question banks and trying your luck, fluking a few and accepting a some fails. (Probably not the best advice for someone who's aiming to impress with a high average and first time passes).