I'm still waiting on them. I've not heard anything from Woo as to when it will be built and shipped since I placed the order. My only criticism of Woo Audio is that the only emails answered by them are the ones where I order something!! Any email I send them asking them a question just gets ignored! Still, I'm looking forward to having a tube amp again. My rationale for buying the WA5-LE was that I wanted an amplifier that I would not have to replace because I outgrew it. I don't imagine that I'll outgrow the WA5-LE, if I did I'd never be able to afford anything better anyway! So I've bought the best that I can afford.
When you say "The Hugo is definitely one of those gotta haves that requires forethought when it comes to procurement.", is this purely on cost grounds or did you find the sound polarising - in the love it or hate it way?
Speaking from experience, I doubt that this would be the end of your quest. I can tell you that my WA5 sounded quite terrible with stock tubes. Well not terrible terrible but definitely disappointing as it was not much better than my $500 Little Dot Mk-IV. Some gurus on this forum have reported in the earlier days that the WA5 did not sound impressive during meets. This is because I think Woo designed the WA5 expecting you to tube-roll and these Headfiers were listening to it stock or with poor tube combinations. To some, including myself, tube rolling can be an engaging and fun exercise, hearing your amp grow or sound like different amps. The WA5-LE provides hundreds of combinations of tubes. Unfortunately (and some are put off for this), each of the driver, rectifier and power tubes costs an arm and a leg (check out the prices of Western Electric 300B NOS from eBay, 1950s vintage, they are more expensive than the amp itself), and even when you upgrade all the tubes (see my signature for my pairing, which I admit is really quite sublime), you will live in fear that the competition sounds better with much less fuss in arriving at that result.
Right now, I am looking at the Eddie Current offerings and I have already placed my order for the BHSE. I am holding on to the WA5 because it sounds very nice now after the tube rolling and because it is such a good all rounder, ie it can drive high efficiency speakers, HE-6 and SR009 as well as or arguably better than the HD800.
Some of its sonic characteristics with the premium tubes include a slightly warm tone while remaining transparent, detailed, fast dynamics and transients, and stunning soundstage and imaging. It's tonality depends heavily on the driver tubes (night and day difference!) and its soundstage on mainly the 300B and rectifiers. I think is not particularly musical or euphonic but the tubes may add some of that tubieness if desired. It is quite weak on bass and you will be more satisfied with an SS amp if you are a bass head. Its treble can sound etched at times if you pair it with a Sabre type of digital DAC or something like the Benchmark.
Unless you have the desire and the means to continue your lifelong journey of upgrades and sidegrades, the only solution is to buy whatever you can afford in your budget and live happily with it. Most sane people end up doing just that, knowing that the increase in sound quality from a $500 amp to a $6000 amp is probably only 30% at best. I am happily in the borderline insane category.
As usual, the greatest improvement in sound comes from your headphones.
YMMV.