Digging a tunnel would be smart. The element of suprise is very important here. A distraction army would be a good idea, placed on the opposite side our main attack will come from. And if the decoy army can harm a few wasps in the process, then great! At the moment when our main army attacks, we should have a bunch of winged workers flying around, harassing them. If those workers can do any sort of damage and/or somehow trap the wasps(the workers need sticky spit for that) then they'd be of even more use.

I had wanted a flying warrior previously, but that wouldn't work then. But maybe it would work now. We should take our time perfecting a flying warrior, getting rid of the heavy weapons, and the armor can be lighter. I agree that the ability to inject acidic venom would be useful, and having a ton of them, growing fast, would be too.