that tank would have to be a pond, not a tank. honestly my brotha you have asked about pretty similar combos in multiple threads...I get you are just doing research and all that but the sheer amount of time, money and patience these ideas you have would bankrupt most of the forum. If I were you...focus on getting a smaller tank like the 80 gallon you've talked about a bunch of times. Get a few small predator fish for that tank and just learn the ins and outs of keeping fish with higher needs than guppies or goldfish. Start with something easier like maybe a senegal bichir or a muuuuch smaller species of catfish. Hell in an 80 you could keep a couple red fin pickerel or even a red high fin wolf fish (generally by itself of course). Point being...you want a tank and stock that most guys and gals on here, that have been keeping large predators for years, could only dream of owning (maybe not so much the stock but the tank needed definitely). The ideas you have are awesome and I'd own 90% of the stock you want myself if I could house them but trust me...start smaller.