For crypts I recommend wendtiis and parvas. Those are the only ones I've gotten in the past, but they have been great for me. Do get some hyrophilias, they're wonderful.
When planting stem plants, you can go a few routes. You can clip the plants down to whatever height you want them at, and they will normally sprout new growth from there. If you started off with very few plants, you can replant the clippings to fill out what you already have. At least, this is for stem plants.
Great link Otterfun gave by the way :)
Also, your light sounds good!
♥ RIP Sprinkles ♥
Current owner of Rocket :)