Vez,
Think about carrying capacity of your water. I would recommend no more than some BG appropriate for your area and TWO female LMB. You will have to feed your BG and you will have to allow them to establish themselves before you add your TWO female LMB. They will get hook shy, that is a fact. Feeding your BG will be problematic as your water will be gaining nutrients as you feed. But if you want to try, don't do more than that. FHM for some starter food is also doable. If you over do it, you will have problems. Modesty in such a small pond is a must.