Id have to say that I cannot think of a more simpler plant to start with than the walmart bulbs, which are typically Aponogeton Ulvacea. They will throw up leaves and runners even with ambient room light, and if you can retrofit a small flourescent bulb into your hood that is all they will ever need. Ive used hundreds of them over the years, as wal mart has been selling them a loooong time.
Here's exactly what will happen if you use them:
You place 4-5 of the furry brown bulbs into your tank, and let them sink. Of them, about 2-3 will sprout out of one side of the bulb; this is the leaf and stem emersion, and out of the other side roots will develop.
Move them to where you want them at this phase before they root heavily, yes I think a goldfish would eat up all the green shoots. On internal nutrient stores within the bulb, the plant will send up lily pads (yes, lily pads!!) and long flowing leaves regardless of your light quality. Some are short and some are long (standard Mendelian plant genetics) and some live for a while and yet others only last two week. Long term success is governed by your lighting and your water params, and if the plants mature they will completely fill up a tank of that size and make a root ball the size of your entire tank. Without CO2 injection, I predict they will stay a good medium size in your nano tank.
Good luck, they are easy plants.