The point of using the LFE channel is because the LPF for LFE can often be set higher than a crossover. The objective is to get a flat measurement from the subs with no LPF in play for an octave above the maximum optimised frequency. So if you want to EQ up to 120Hz then you shouldn't have any filters in place until 240Hz, which, with a steep LPF at 250Hz is about right.
You can bake a target curve in to follow the shape of your sub's native response but MSO does a better job when given a flat target to aim for IMO.
You can bake a target curve in to follow the shape of your sub's native response but MSO does a better job when given a flat target to aim for IMO.