I want to propose a different way of asking this question. Is there any reason you should NOT roll off below 30hz? I can't think of one.
Even a 4th order roll off at 30hz leaves a fair amount of signal in the 20hz range. Band limited compression may be an option that gives you more control.
I'm sure you can control the low end so it won't create down stream problems without losing the impact the composer was going for.
https://wanderingear.net