You seem to be doing pretty good! Too good, even, how are you playing entire months so quickly?

Hah, caves, the bane of XCF and Piratez players everywhere.

6 agents vs an entire base?

Data slates are basically free alien interrogations on a limited number of topics. Takes a while until you can start decrypting them, though.
I see your underhanded party favours are starting to pay off. Literally.

Werecritters are pretty bad as cryptid terrorists go. They didn't mind fuck you?
You really beelined for the Ospreys there.
Your plan for December seems fine.
Taser Cannons are a niche weapon that's very good if you
really need to capture something at all costs. OICW, Arasaka, FN P-90 might be worth a look. SVDs are good, if you've looted any from the Red Dawn. Land mines, if you have any inclination for the proxy game.
Pepper Spray for training Bravery and Reactions on downed enemies.

Since you've got Alien Biology, Dart weapons and Knockout Grenades could be of some interest. I remember blue darts being somewhat workable as a longer-range alternative to beanbags.
Healing Sprays for quick stabilisation, maybe? They're really costly, though, and manufacturing some monster goo lotion is probably better. Wait, you don't have that yet, do you?
Longer-term – Nobelon, if you've looted any magic cigs or get them from an interrogation. There will be sanity-destroying missions soon enough.