Cultivator ManPower is the top priority for me. It's a complete game changer.
It's not only that some buildings requite mandatory CMP, like the Dream Mist collection, or that buildings like the Walls have extra features that only activate when staffed with CMP.
It's the double bonus to Admin and Happiness when CMP is assigned to normal facilities (and triple Ag and Mat!). That's something huge that would make it so much easier to hit the discount project cost multipler from high Adm and the effective Manpower multiplier from high Happiness.
That would do a lot to allevieate our dependency on Cai Wealth.
To put it to simple terms, we can't have enough CMP, even if we don't have so many CMP-only slots.
Since the CMP capacity has a hard cap based on MP capacity (a fifth, to be precise), that means we can currently have 3 CMP at most.
So, until we hit that limit, increasing our CMP is my top priority. That means double Shrine.
Snowblossom gives us another 5%, pushing us up to 20%. 1 in a 5 chance instead of 1 in a 7.
Boiling increases the CMP capacity to 2. That wouldn't be necessary until we get the first CMP, but it takes 2 months to complete. In the case we get lucky that would be 3 months (since we'd need to wait a month to start) until we have a empty CMP slot. Missing 2-3 CMP rolls is way too wasteful.
We are actually 0'5 Mat away of being able to do Double Shrine + Boats this turn. Such a shame.
Those 3 projects cost 95 Mat (20 + 25 + 50) leaving us at 4'5. Next turn we would gain 5, so we would have 9'5 Mat available.
If next turn we did Cai Wealth and Bai Soil Studies, none of those two cost ant Mat.
Then we could do Pop Drive (or Jadehelm Carver) that costs 10 Mat. We want more MP, so Pop Drive is also a project we want.
So, yeah, 0'5 Mat from my ideal plan: Double Shrine + Boats --> Cai Wealth + Bai Studies + Pop Drive
So I will go for the second best option
[x] Plan: Red God Blue God
-[x] Boiling Deep Shrine Foundation
-[x] Snowblossom Shrine
-[x] Call on Cai clan wealth (resources)