[JohnM]

Those graphs look like they include the mains, the level at 200Hz seems much too high to be from a sub alone if it is driven through a crossover. If that is the case the target should be set to full range rather than subwoofer and the sub level looks very high compared to the mains, at least through the range shown. Better to get things working well and levels reasonably matched without a house curve in the target then try a house curve after that to see if it does what you want.