D.capensis, adelae and capillaris are easy drosera (sundews).
U.livida and dichotoma are easy utrics (bladderworts).
I'd stay away from pinguicula (butterworts) for your first attempt with a classic terrarium. I'd also stay away from VFTs and Sarrs as they need dormancy. Unless you keep them in pots above the waterline, I'd avoid nepenthes (pitcher plants) as their roots don't like being constantly wet.
Have you considered building a terrarium where the plants are kept separately in pots (or growing the plants on a plain old shelf)? These are much easier to maintain and allow you to grow a wider variety of plants. Just a thought.....
As for lighting, for a 15gal, the easiest thing is to buy two clamp lights and two 20-30W compact fluorescents at HD or Lowes. This should cost ~$25. You also want to buy a digital temp/humidity reader at HD ($20), and leave a small crack open in the lid for air circulation and reduction of temps (or buy a CPU fan and splice it to an extension cord).