I don't envy you. We just recently moved about 200 miles and I went back and forth on what to do with my larger tank which was only 65 gallons. I ultimately decided to rehome all of the fish in the 65. Most of the ones I cared about (bichirs) went to MFK members, so I can still see how they're doing, which is fantastic.
I decided to move my 20 long with my Schoutedeni Puffer. I wrote all of the steps out, moved them in a styrofoam cooler with an air pump and the filter media, and everyone was fine HOWEVER it was really stressful. I was really thankful to not have moved my other tank. That being said, my other tank didn't have anything in it that would be difficult to replace.
Anyway, my point is... do what seems right and best to you. Moving is stressful no matter what. It might be a middle ground to rehome some of the fish that will be easier to replace in the future to drop the stress level. That way you can really focus on the ones that mean the most to you.
Also, there have been stories on here of people losing many fish in a move. It's something to consider. I know it can be done though, as many here have done it successfully. So there's my flip floppy answer.