Yea I would. I would mess with them until you get what you want. Ideal situation would be a barrel effect in the middle of the tank. Just a slight up and a slight down dont want water shooting out of the tank or a sand storm.
Its the spinning motion you will see created by your PHs in the middle of the tank its just a good flow diagram I suppose. Its a good start. This way lower flow corals can be housed in the lesser flow area on the sides and the higher flow can be housed in the middle. Upper middle for higher light and higher flow. Lower middle for lesser light higher flow and so on.