Bro you have more then enough shrimp to start a colony. They won't take long to breed once they are settled in. They can be quite indestructible to be honest as long as your water has no extremes in regard to contaminants and chemicals. You may end up having to give some away eventually. I would also limit the fish too as the idea is to let them go about living their lives, acquiring what they need from the water but not to allow them to consume everything in it. ie If the frogs breed and happen to do what mine did and deposit the tadpoles into the water you may want the natural biology of the water to supplement the new tadpoles' diet a bit (although you may need to add algae wafers and such to ensure everyone down there is eating). The waiting bit is torture. I am contemplating starting another tank upstairs in a few months that is going to be all visual eye candy and already I am getting the itchy frog purchaser finger lol