Glad the day went well for you
Not surprised to hear that the Lintons did it for you, and I reckon your 4x5M space would be more than big enough for them.
No idea what you'll make of Naim amps, though I did hear their Statement amp powering some Focal Scalas last year, and that was quite nice. And at close to £200,000 a total bargain 
Assuming you're happy with the Lintons/WiiM, I would recommend having a chat with Hifi Dave regarding amplifier choices. I'd expect him to have some models as capable as, if not more capable than any amps you heard this morning.
I just dropped in, to see what condition my condition was in
T/T: Inspire Monarch, X200 tonearm, Ortofon Quintet Blue. Phono: Project Tube Box CD: Marantz CD6006 (UK Edition); Amp: Musical Fidelity A5 Integrated.
Speakers: KEF Reference 3, REL T9i subwoofer. Cables: Atlas Equator interconnects, Atlas Hyper 3.0 speaker cables
T'other system:
Echo Dot, Arcam A75 integrated, Monitor Audio R852 MD speakers
A/V:
LG OLED65 G56LS, Panasonic Blu Ray, Sony a/v amp, MA Radius speakers, REL T9i sub.
KICKSTARTER: ENABLING SCAMMERS SINCE 2009