One aspect to keep in mind is that concentrate spoils faster. You may want refrigeration to protect the concentrate quality. You would not want to concentrate that much into a single batch and hold it for very long at all. Once concentrated it either needs to be cooled or boiled soon after or you lose sugar to concentrated microbes.
Proctor concentrates then cools to just short of slush forming and holds it for 2 -3 days. Without refrigeration an hour or 2 might be about the max. if the outside temp is not close to freezing and the concentrate can get cooled that way.
Dave Klish, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.