no . . . as noted, you are already over-stocked; 2 GTs or 2 JDs could work in a 65G, although I think it's a bit small . . . the 90G would be great for either pair, but I don't think it's big enough for both, especially if you have mating pairs
I don't see a scenario where you would (or should) add another JD in either a 65G or 90G tank . . .