Isopods will eat a variety of foods such as fish flakes, cardboard, pieces of fruit and vegetables. They do not eat mold like springtails, but they are a good janitor species that will thrive in your tank.

Your shopping list looks pretty good. You will just need to order fruit flies, fruit fly media, vitamin and calcium supplement as a staple for your darts.

As far as the light, IDK what the bulb is, but it needs to be 6500 Kelvin (K). That is the optimal growth spectrum for plants. Also, you will need to cover that mesh top of the viv to keep the humidity in. I would go with a coco hut instead of the hide, and you actually don't need the water dish as your humidity should be 80-100% anyway.