[laverda]

The key is max head height is 6’. That means you get a trickle to no flow at 6’ of head pressure. You will not get much flow out of a maxi jet at 4’. You can reduce it further with a ball valve if needed. That will not change the head height per say, only the flow. Any fittings you add to the hose, like valves, couplings, elbows, Ts will decrease flow. In your case height is probably going to be the most significant factor.