New amp rack for bins only unsure of settings

Hi all,

Its been a while since I've put together a pa set up was retired basically. Covid brought back my love for audio, now heres where I'm stuck, I have a behringer autograph with sub out, an alesis 3630 compressor that I will use for protecting the signal from blowing my bins, and a peavey cs 4000 amp which will run my twin 15s reason for this is the tops are rcf active.

So any advice I would appreciate. Currently I was looking at cutting the subwoofer point at approx 85hz - 90hz.