Anything you would change about my sound settings?

[Warm Gun]

It's a Sony SACS9 subwoofer, right by one of two SSCS3 towers for the front, a SSCS8 center speaker, Pioneer SPFS52s to my left and right as surrounds and two Sony SSCSEs above the TV. 5.1.2.

I looked up what reversing the phase on subwoofers is and still don't really get it. I don't notice any difference with it reversed. I've always had the switch set to Normal. Does it partly depend on the size of the room? My towers are 77 inches apart and my ears are about 105 inches from them.

I have the Level wheel of the subwoofer at 2/3 and the Cut-off Frequency wheel at 100 Hz (half).

In the receiver, my crossovers are:

Front speakers: 50
Center: 50
Height: 90
Surround: 50
Subwoofer: 100

The subwoofer crossover goes up to 200, but I read somewhere that the closer you get to that the more it just sounds like a speaker. When I did the calibration test with the microphone I had the Cut-off Frequency wheel of the subwoofer set to about 120 Hz, and the test set it to exactly that. I think the test set the center and front speaker crossovers to 40 Hz, but I can't remember for sure. They're rated for 45 to 50 Hz.

I don't wanna raise the bass Level any higher than 2/3 because of where I live.

I find it extremely difficult to notice these types of differences, which is why I'm asking instead of just doing more tests.