That's why I've been pushing for the queen flower growing upgrade to the polinators!
And that's not going to happen. It's gravely OP, and clashes with the surrounding backstory.
It's a mutual relationship, not only does the Queen make the Queenflower, the Queenflower makes the Queen. There's a special, unique psychic link, and the social structure of the hive is mirrored in the structure of the Flowers.
Edit: Anyway, for actual suggestions.
Stay away from the geological facilities. We don't know what the humans are doing there, but it's very likely they'll have seismographs installed. Probably in a large area around the base(makes them much more efficient). Probably even with an automated uplink to a central database. An underground attack here would work, but after that we'll loose that advantage.
The botanical Testing facility is likely to contain Earth samples, and probably equipment related to cloning and Dna scanning/manipulation. Makes a decent target, and there's little reason for automated network linkups here. Secondly, as the facility is most likely domed and pressurized, it won't be too hard to make it seem like an accidental catastrophic failure. We just need to remember to actually blow it up after setting the charges.
The others make worse targets. The manufacturing settlement and outpost have many vehicles available, and the hiveship could be too heavily armored. Besides, there's not much to gain there.
For technology, we need to focus on things we can't solve with biological upgrades (rockets), or on things to complement our biological abilities (Kai machine interface, Cloning installation, Mutation inducing systems)
Scouts
Work in team of three, (more chances to fight back if located)... concentrate on scouting botanic facility. If located, first try to kill all enemies (and have a snack) , if failed flee and go hiding somewhere far from the hive, to be rescued by tunneling to them should we decide to...
Capturing biped alive could be nice, too...
Eggs
Lay: 5 M-caste soldiers (attacks from below, hehe, decided to save 5 M-soldiers for possible upgrades), 1 M-predator (tanks are nice things to have)
Will: 4 M-predators to M-nurses and\or M-commanders, will B-nurse to B-commander
Flowers
As soon as we get ability to:
a) start planting underground flowers in abandoned mines\other tunnels to be tended by patrolling pollinators [Nah, centralization is fun]
b) Plant more evergreen flowers in the optimal chamber
c) Don't forget about tending for queen's flower
Royal jelly
Upgrade a pollinator to commander pollinator , making it able to both command and coordinate other pollinators (use experience from vivisecting LVL1 commander) and, ideally, able to do plantrelated research.
[I dunno about this one. No support yet]
Weapon designs
Design pollen fuel propelled rocket launchers. [Nah. I propose pollen fuel mines/ underground explosives]
Industry
Build second food synthesizer in the deep part of hive
Move stasis chamber to the deep part of hive (no need to have two of them)
Upgrade deep underground farm to plant researching biolabaratory
Research
Try to find source for mutation producing substances. Does our fusion reactor produce radiation(It should). If yes, see if you can give a few larvae some doses.
Attempt the creation of a chemical laboratory. The Identification and recreation of KAI proteins and hormones will be useful.(Kai growth hormone, ....)
Attempt the creation of a DNA scanner, or even a cloning installation