That is an interesting shaped room. How do your speakers sound? I was thinking about those before I built my NX-Tremes.
The front of my NX-Tremes are 5 ft (1.5m) from the back wall, and 8 ft (2.4m) to my head. I think they sound great in that position.
Were you planning to build two OB subs to go with the NX-Tremes?
The DI are very very good speakers, can only recommend them.
And the sounds very good in my room now. But it took a lot of acoustic treatment to get it right. (not on the pictures)
So why am I about to build the NX-Tremes? Like Monty Python ones said "now for something completely different"
Like the DI the NX-Tremes are fascinating and different, just got to try it
Also I just bought a used LM-845 premium and like many 300B tube amps it's a little weak in the bass region. But incredible from 100hz and up.
So I was thinking a combination of active subs and an easy driven pair of speakers would be the perfect match for my amp
Yes I am planing on building the subs. But I will start with NX-Tremes, if I like them I buy the subs.
It's extra expensiv for me because I live in Denmark and have to add 30% on top of every dollar, also shipping, yes that's right

I will never be able to move them 1.5m out in the room hope that 1m will do it.
Are you living in Europe? you used the metrics system