I want a force of 52 girls.
Serena & Co. = 5
Mami, Kyouko, Kyoclone = 3
Taya + clairvoyant tandem casting search for stealth/new demon enemies = 2
2x clairvoyant tandem casting for beholder tracking = 2
Seto for Serena transport duty (no combat) = 1
4x teleporter for evac team (limited to when beholder is being tracked a safe distance away, based with Taya) = 4
5 x teams of 7 girls (2 barrier, 1 healer, 2 melee girls, 2 range girls) = 35
I think we can have this setup during the first two weeks, and then switch to something less intensive the last two weeks.
OK, everything up to the teleporter evac team is reasonable. The construction of the combat teams is also fine. However the number of them may be problematic.
In order to have that quantity in place in the first two weeks, and, say, remove two of the teleporters on the evac team and 3 of the combat teams for the last half of the month, you're committing to...
All elites are there fulltime, so nothing special on that front.
All those vets for half a month is 21.0. Reduced form for another half-month is 9.5. Total of 30.5 vet requirement.
DS0 hunting for a month would require 14 vets (including 1 on teleport, which we have enough capacity for).
Also, it would not be unreasonable to ditch all rural hunting for the month, letting it drop to -4.8 DS, and freeing up another 2.5 vets. The following month would just require 3.0 vets to bring it almost back to DS0.
Harvest would be 51.6 cubes. We'd have to count on getting at least 30 from Tokyo just to bring our buffer back to x1. I don't expect that to be a problem.
8 vets on support. Can't really remove any of those. However.... we only have 4 clairvoyant-specced meguca. You have 4 assigned in Tokyo, and we need 2 more for dispatch. Resource limit problem. Might be able to fix by recruiting assistance from local meguca to track the beholder (edit: but they wouldn't be tandem trained).
We can't really pull anyone off of jobs, even if I'd love for Akeno to have a chance at the spotlight. 13 vets there.
Third month of general training needs to be finished. 1 vet there.
Taking all that into account, we have a max of 22.5 vets available for the month. Significantly short of what you're requesting.
I think we can do 3 vet teams the first half of the month, and 2 teams the second half. That would be 23.5 total, including the extra clairvoyant team. 21.5 without the extra clairvoyant team.
Edit: or, we could delay the final general training session, freeing up 1 vet, plus put the two greens on jobs to free up 2 more vets, giving a total of 25.5 available vet months. Still not enough to clear your requirements.