One thing you may want to think about is,Many of the fish that you would like to have get very big,What would make more since to me is,Do a little research and find out which angel gets 6" rather than a foot,or a lion fish that gets only 7" rather than 18 inches,just a thought,that way you can have more of what you want ,and spend less of what you don`t have to spend,another thing that you should think about is all those fish you would like to keep can live well over twenty years,and if the time came to sell or if you had to get rid of them ,more hobbiest would be able to take a smaller fish off of you than some monster,The maintainace and up keep on a tank are the main things that make people leave the hobby.......With fish that require more food and put off more waste per given volume of water,you are really going to want to up the filteration on that tank,It is not the size of the fish when it goes in,rather it is the size of the fish when it grows up...Just my two cents