@curiousjim 

that's interesting, the short ports work down to 35Hz and the long ports work down to 32Hz suggesting that the short ports would offer you less bass. If you look at my pics you will see I have similar positioning to you. I am about 12' away with a similar gap between speakers. I use 1 long at the bottom and 1 short at the top although I must admit I haven't tried 2 shorts. 2 long ports seem to muddy the bass a bit. My room is constructed completely different to yours, I have no hard surfaces, behind and to the sides of my speakers is carpet on chipboard with insulation behind, any a void behind that. I have almost no reflections in my room. It basically means the system comes 'alive' when you really push it. The manual suggests 2 shorts work better away from the walls. I personally don't use a sub and don't think I need to either. Enjoy!

@curiousjim 

A few years ago, Steve Plaskin (with AudioStream at the time) posted about using fiber converters and 1M of fiber as an isolation technique to reduce noise.  Based on that review, I purchased 1M of cable and two converters, and then later installed my entire 45-foot run with fiber since I figured having only one SMPS near my system was better than having both near my system.  Before long, I switched to LPSs.  I cannot remember how I came on the products that I used, and I am not the right person to ask about which specific converters would offer the best performance but these are what I used:

• converters
• fiber cable
• linear power supplies

For a while, I thought music sounded a little smooth/calmer using fiber from my router to my system, but then when I started trying other isolation products such as the Network Acoustics eno, and later the muon, the effect of using fiber seemed to be no longer necessary and I found that going back to Ethernet cable only for my 45-foot run (CAT8) may even sound slightly better, although the difference seems almost imperceptible. Your plan to start with the converters and then if you like the sound, add LPSs is a good way to start.  FWIW, the iFi power supplies I believe are highly filtered SMPSs but not LPSs.  That doesn't mean they are not quieter.  However, my understanding is that there is a big difference between the iFi SilentPower and the more expensive iFi Power elite.  Good luck.

. 

@mitch2 

One more question, do you have the converters before your router or plugged into one of its outputs. I’d have to put it before the router because I mostly do WiFi.  Otherwise I have to use a netgear Powerline adapter. NETGEAR Powerline adapter Kit, 2000 Mbps Wall-plug, 2 Gigabit Ethernet Ports with Passthrough + Extra Outlet (PLP2000-100PAS) https://a.co/d/4YswvJv  And lord knows how much noise that puts into the mix!

Thanks

"I just watched a few videos about audiophile switches and I don’t understand the need"

Don't question it. Just buy in.

Probably better with a fancy pc cable, cat 5 cable and fuse. Cryo everything before use too.

THAT's how you roll with the audio neurotic club.

The madness NEVER ends...

my belief gained through my travels on this subject is that good clocking and elimination of electrical noise pollution are both important... the importance of the latter highly is dependent on the nature of upstream signal feeds/routers and of course, one’s digital music source (multi use computer, streamer, renderer, what have you...)

it is not just about the integrity of the transmitted data packet info (the networking guys only focus on this, this is a necessary but insufficient condition for success in hifi reproduction), it is about how the data gets decoded accurately back into analog without distortions caused in the process (which requires proper timing and electrical properties of the waveform being read during the conversion...)