10 dB of boost cost 10x the power relative to whatever volume you are playing the rest of the material in room.
82 dB for a SBIR frequency corresponds to speakers being 3.4 ft. away from the wall. You are using the crossover and high pass on the sub? What happens if you move crossover frequency up to 82 hz or up to around 100 hz? Also, no way to put the speaker in front of the sub?
The good thing is the KC62 has a limiter so it is unlikely to destroy itself. The +5 dB stuff is fine. It is typically only the SBIR related stuff which is 10-20 dB where the power changes orders of magnitude.
Also, if you look at filters 8 & 9 in your plot above, there are two filters close in frequency with opposite sign (one cut and one boost) so the result is the boost isn’t actually the full magnitude of the boost filter. That is why programs like REW let you set individual filter max boost and overall max boost.