Tube amps under $7500

As I stated above, I am suggesting that you hear these amps even though they don't match your criteria and tell us if that is the kind of sound you are after.  If you think they are too warm, for example, you might be a candidate for the Audio Research amps being suggested above.

Also, if you do find it to be as good as I think it is, you might change your plans.  It is an integrated amp, with a first rate DAC that might prompt someone to drop a whole lot of other gear in favor of this amp.  I know of a buyer trading in a Jadis amp, Jadis linestage and a DAC (don't recall what DAC) for the A100 model that costs a small fraction of the gear being traded in.  I had to agree that the A100 sounded better than the Jadis, and Jadis is really nice sounding gear (also spectacularly well built).

Yes, I would certainly like to hear the Synthesis. If it resembles Cary, then I would probably like it. Same, I expect, with Aric. Only question is whether a tube amp (other than Stone Fortress ARC, VAC, etc.) can handle the low frequency impedance dips in my Legacy speakers. 
As for integrated amps -- should I find myself reluctantly abroad and in more constrained living circumstances (per @mdalton) -- then integrated would certainly be the way to go.  

by distributor, if you mean deja vu, pretty sure their website is not up to date.  my understanding is that the Prime series - which includes the Ovation and my Ensemble integrated - has been discontinued.  But @audiotroy will know better of course.  in the meantime, i’d recommend you look at the synthesis site (synthesis.co.it).

With a lot of tube gear, the difference between an integrated amp and a power amp is surprisingly minimal--if you take the power amp and add input jacks, a source selector and a volume pot, you have an integrated amp.(you probably don't need additional gain of a preamp or the buffering of the preamp).  One is often better off going with a manufacturer's integrated model because it is cheaper, will sound at least as good and will not require a pair of interconnects.

Late to the party..... but here's another recommendation for the Aric Audio Transcend. I've owned mine for a little over six years now with nary a problem. The bass is excellent,which is really important to me with the types of music I love. It actually can be used without a preamp if one wanted to (gain control). I don't because I like being able to adjust the balance via the pre's remote.If Aric ever decided to close up shop any place that services guitar amps could take care of any repairs easily. The way it's laid out internally is neat and accessible. My two cents:-)