Thanks for the reply! My career situation is not that bad, I'm pretty early, and the only crewed ship I have is my space station. So I can just return the crew, get USI-LS, and send up supplies. I don't know for sure though if I'll switch to USI-LS. As for the greenhouse problem, even though the Tundra agriculture module doesn't seem to work with TAC, the ship I was testing with had the Tundra ring, and that had a greenhouse option, which worked great with TAC. I like that module so I'm fine with using that as a greenhouse for the Tundra series.
Again thanks for the reply, I'm new to the forums, and I can't wait to get more involved!