When starting a new tank I like aggressive growers like Hygrophila polysperma or Heteranthera zosterifolia (stargrass). For low growers, my absolute favorite is Glossostigma elatinoide. Staurogyne repens is excellent as well, but it's a bit more maintenance to keep it low. Hydrocotyle sp 'Japan' is a great midground plant. If you don't have any luck locating a source for plants, send me a PM, I might be able to help you out.
Thanks for the advice! I was thinking of glosso for the front, but though it was a bit more demanding than what I have for lighting. I have the Finnex FugeRay, which gives me about 38 PAR, or medium light. Think I should give it a shot?
Hydrocotyle sp 'Japan' is a sweet plant. I'm sure I'll need to order it from somewhere, I haven't seen it locally.