My best suggestion is two-fold. First add a large tank (3-4x the volume of the releaser) close to the second releaser (that way there will be a "stash" of extra vacuum when the releaser trips), then order Steve Childs' Tubing Handbook and read it fully. It will give you all of the answers.
For one thing, regardless of the pump, if the transfer line for that vacuum is under sized you get no more vacuum out 3000' than if you had a much smaller pump. That notebook will give you the sizes you need to get the vacuum out 3000'. That large vacuum tank will help but will not be a cure, the only cure is to use the right size vacuum line.
After the sugar season you could also hire a tubing installer, they will know what size pipe you need, it may be 2.5", maybe 3" maybe more.
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.