Wilson Audio for a 1600 sq ft space

Hope everyone is staying safe.

Sorry I've been AWOL but I put this project on hold due to a bout with cancer. After several months of treatment it's looking like I'm back on track to being healthy again. Fingers crossed. 

So I'm finally revisiting everything with a more YOLO perspective. I haven't pulled the trigger on the speakers yet but I've secured a stack of d'Agostino Momentums: Preamp HD, pair of M400. 

I'm also pretty much settled on a dCS Bartok. 

Now the question I have is do I stick with my plan to acquire the X1 series 3 or 5, or upgrade to the X2 series 2? Some here have argued that newer technology is not necessarily better... Do the X2s substantially outperform the X1? Will the X2 fill up my space better or is their sonic improvement only perceptible in a dedicated listening room? If that makes a difference, I will be adding a sub to my system at some point down the road. Probably a watchdog. 

Current drawbacks from getting the X2 is obviously pricing and the fact that I marginally still prefer the more retro look of the original X1. 

Following the YOLO mindset...

Whatever you do with your speakers, go with not one sub, but several. The SWARM or the REL six pack arrangement

http://www.audiokinesis.com/the-swarm-subwoofer-system-1.html

https://www.stereophile.com/content/rels-six-pack-subwoofer-line-array-just-what-we-need

Wilson sasha 2 sounds better nearfield. I have tried it 3 meters
away from my listining chair and it does not sound that good;
music sounds so far away.

@supermerio The Sasha's are no longer in the running. It's between the GrandSlamms and the Alexandrias.