On your list, I like the Monitor bronze 6. They make very nice speakers. I’m a tower guy, and find that even above the XO point, they (can) deliver better dynamics and midrange power, and punch. Many times they’re easier to drive than BS speakers, and have better power/thermal sharing due to the extra drivers. IE: towers aren’t only about bass extension.
As mentioned, the current speakers are just too small. I think it’d be fine in a bedroom or den sized room. You can raise the XO, but that sub imo, will just get boomier as the XO goes up. Plus, you’ll still have a “scooped” midrange, but it’ll just start higher in the frequency range.
The subwoofer is also, too small, and probably wouldn’t keep up with the Monitors if you wound them up.