Well I hope you dont do the whole 'aquarium stunting' deal. Bigger is better.
But wow, you had octopi? What species? Any pics? How were they? I've always wanted to try one after some experience. I'm trying for a peacock mantis before college, shouldnt be hard to move if I have to. Then maybe a small reef, medium predator tank... Then the advanced stuff when I have a job and way older... How were your sharks and rays too? Man I want to see what you had (have?)!
Sorry I'm not giving much fish-specific info. Thats not my strong point in animal care, but I always have plenty of my animal-keeping philosophy to share. Or reptile stuff, I can anwer just about anything lol. But yeah, I work for my money, and I have to spend it wisely. Theres always that nintendo Wii in the back of my mind when I have money to spend lol. But by the end of the year, I should have about 450 or so saved up, then I'm taking a 2 week summer job at a nature camp as a counselor and I get 500, so I'm spending it on a pair of red ackies (ridge tailed monitor lizards). Fish come later, so do birds, exotic mammals, and inverts. After I'm satisfied with my reptile collection for a length of time, I'm trying for a hedgehog or sugar glider, an antilles pinktoe tarantula or some emperor scorps, and maybe a bird of some kind like a sun conure. Anyway, its ALWAYS good to state your situation, setup, and experience before you ask a question like this. You'll stir up a whole mess, and I know from experience.
Typo: I said dragons ain't no crab crunchin gymnothorax somewhere up there. I think they are Gymnothorax, and Echidna is the genus of the crustacean eaters.