Well, took advice from this board and bought "How and Why to Build a Wine Cellar, vol. 3" as well as a max/min recording thermometer and hygrometer.
That book is pretty deep into geography and physics, but what a resource! I'm enjoying the whole thing and the depth at which he explains his arguments makes his conclusions compelling to say the least.
That said, I'm still debating whether or not to get a contained cabinet like a Vintage Keeper, or build a cellar. I might do both and keep the collection safe within the fridge until I get around to building a passive cellar.
On a positive note, I installed my thermometer device in the unfinished basement of my new house (despite the fact I haven't taken possession yet) and low and behold, the temp down there yesterday (it was 26 C degrees outside) was a wonderful 16.6 C degrees and an astonishing 70% humidity! I'm a bit skeptical though, because I fear the new concrete in the basement hasn't yet finished drying out and may still be emitting moisture. It was only poured two months ago. That said, I am excited to see what the max and mins are over the next few days.
One problem I have noted though, is that while my basement is considered 'unfinished', the builder did take the liberty of framing and insulating (modestly by cellar standards) the exterior concrete walls, so I won't be able to install a vapor barrier or polystyrene without ripping down the existing work.
We'll see - I only foresee being in this house for 8-15 years at this point, so maybe committing to a cellar that I will eventually have to give up is a silly idea.