CB, theres too much wrong going on. First off, it doesnt sound like your home life is pleasant. I dont know about anyone else in your family, but your aunt seems kinda bossy and theres too much fighting. I think its best you focus on getting in a stable situation before thinking of fishkeeping. You cant care for them properly and your aunt wont let you do WCs, plus theres constant threats of being thrown out.
You are also bouncing around homes for a place to stay, are you gonna keep lugging your fish and belongings all over the place? Do yourself a favor and find a place to stay where you will be stable and wont have problems. Fishkeeping should be the last thing on your mind right now.
And like I said earlier, with the tank sizes you have, you should consider getting fish that are proper for those size tanks. Theres plenty of fish that grow small enough to keep in your tanks. Ask around and get suggestions. Theres cichlids that stay small too.
But take care of yourself 1st alright?