Thanks for the vote of confidence, roach! This is definitely some serious tinkering and I'll post a few pics of current status tomorrow evening.
The rough draft is that all but an inch of water is out of the big tank and all of the fish have been transferred to temp tanks. There are three berried Marmorkrebs in buckets inside the big tank and they were three that were apparently too feisty for my Peacocks to eat... so I'll take them to a new home where that won't be the case.
The bonus? All floor water has been dried up, heat cranked, fans-a-blowin' and there is no unusual smell in the room so I'm relatively certain that I've avoided any kind of structural moisture damage, etc. The natural humidity in this room hovers around 30% so that helped a lot.
The second bonus? All fish survived and appear to be healthy. One of the new heaters stuck on full tilt but the bass doesn't seem to be harmed at all and I'd rather that than something less than 65*f, as unfortunate as either might be.
The third? The stand appears to have dried out (mostly) w/ minimal de-lamination of the 5/4 plywood top which would not have been a joy to replace.
Pics tamale !