Don't have the 1000 gallon yet, and I recently sold off the 1,200 gallon. Have a guy holding my stock in an intex pool for now until I rebuild. I did go with your advice (massive thanks!) and thin it down to something more manageable. New tanks are:Sounds amazing, but I think even with the new plan it still sounds like a fulltime job to upkeep that many big tanks/pond. I would also encourage you to reevaluate your stock lists - maybe I am misreading what fish you plan to have together but some seem really random or outright incompatible. Think through if you could only have 10 species which ones would you absolutely want to have... When I am looking at my tanks I love all my fish, but when I am away I can think of the species I really wouldn't want to do without.
Maybe try to think of a theme for each tank so they don't just look like random fish thrown together, maybe large groups of "smaller" fish and then a few show specimens in each big tank... or just something that ties them together... maybe even consider from an aquascaping perspective, because many giant tanks are kind of ugly, even though they have amazing fish. I guess just try to think what fish really have staying power for you, and then your tanks will be more focused.
Post pics of your 1000g aquarium! That is no small tank itself, and if you post pics people will be less likely to think you are trolling or being wildly unrealistic (because even your modified plan does sound a little fabulous!)
-12x10x6 monster tank ~ 5000 gallons (old stock from the 1,200 and new stock from the other 1,200 I was going to build) - gars, cichlids, pbass, pacu, eels, silver dollars, dats, cats, aros, polypterus, loaches, payara, knives, rays, dorado, tigerfish, and FRT
-20x10x4-5 outdoor covered pond ~6,750 gallons - arapaima, RTC, RTC/TSN hybrid, probably a school of 4 pbass and 4 oscars, along with something like chubs, tilapia, minnows, etc for fillers - bogs on side with plants for extra filtration and housing platies, guppies, etc
-16x4x4 monster tank ~ 1,900 gallons - catfish, cichlids, aro
A few tanks plumbed into the 1,900 to boost its volume:
-400 gallon w South American lungfishes
-80 gallon w Flowerhorn
-55 gallon w Electric catfish
And then the stuff I already have, plus a shark tank and a ray tank
Ray tank will be outdoors probably to replace all of my massive shark tank plans, and go with something I could likely DIY. Planning on a touch-tank style pool to maybe house some bonnetheads in there too.