On the pitcher plant, it's not anywhere near needing a bigger pot. I had one that grew in a smaller pot than that for at least 3 years, and the leaves and pitchers hung down nearly 4ft before I repotted it. It got to 6ft in the new pot and finally I put it out under my big oak tree.
They gain most of their nutrients from the bugs they catch in the pitchers, so the roots are really more for just anchoring the plant. As long as it isn't coming out of the pot, its fine.
They like bright shade, warmth, high humidity and water always in the pitchers, but not chlorinated tap water! Chlorine will kill the enzymes in the pitchers and the plant will starve.
So water it with either warm rain water or leave a jug of tap water out on a counter over night to let the chlorine evaporate before watering it. Hold the plant over the sink or in the shower and make sure you wet the leaves so that water goes into the pitchers
