Put the whole darn box outside in the sunniest location you can find. The D. Capensis likes a little less sun, but I grow mine outside. Sarrcenia see 8+ hours of sunlight in the wild and can make decent growth with 6.
More light is better, they literally need to be treated like tomato plants.
Also I think it should be said that you should only water with distilled water.
Otherwise, you actually have a very nice selection of plants and I love the planter!