I love planted tank but they can get very expensive very fast depending on how hooked you get. Unless you plan on going with a simple low tech set up that will work with almost any light you might want to wait until money isn't so tight. Unless you use co2 there is no need to spend more than $200 on a light fixtureplain sand is fine. If going co2 expect to spend a grand for co2, light, substrate and plants.