Sounds like you are going to have to change everything in your whole life, lol!
I would start with your room (try to find a bigger/better/more rectangular one). My room is bigger than yours and I find that speakers that roll off below 65 Hz are acceptable. Otherwise the sound gets too slow and heavy as the room overloads with bass.
You mentioned that you prefer tubes but I think you might want to try an amp with a lower output impedance (maybe a Pass/First Watt pure class A) since the high output impedance of your existing amp will act like a tone control with your speakers.
I would start with your room (try to find a bigger/better/more rectangular one). My room is bigger than yours and I find that speakers that roll off below 65 Hz are acceptable. Otherwise the sound gets too slow and heavy as the room overloads with bass.
You mentioned that you prefer tubes but I think you might want to try an amp with a lower output impedance (maybe a Pass/First Watt pure class A) since the high output impedance of your existing amp will act like a tone control with your speakers.