I'd be worried about the pressure bing too high and effecting the membrane. Too much will also effect the rejection rate. You also may want to check for a clog you could be putting a lot of back pressure on the booster pump. What is your TDS? If its low you may not need all that hardware.
Larry, was that the one listed on RC? The guy was in N VA, I was looking at that one but backed out because I want to use a 250 watt MH pendent that I already had. (center brace) It looked really nice, good buy. Congrats.