5 gallon buckets and that amount of sun should open pretty much everything for you. The only thing you have to be careful of with any type of container garden or raised bed is you have to make sure they are watered, because they tend to dry out a little quicker ( at least with me, anyway). And in the buckets, just make sure there is enough drainage, or you will have the opposite problem. Other than that, tomatoes, peppers, eggplant, string beans, zucchini, herbs ( basil, thym, oregano, mint ...), okra, cukes, soy beans ... the list is endless. I wish i had that much sun