Get rid of 3 laps and the biggest bass and perhaps 1of the plat sens and maybe a couple of congicus,for the size possibility, deliver em to the uk and il have em!
Being a bichir man, I would say lighten up on the P bass.(prob best bang for the bio load buck) I would also look at the numbers of the same types of polys and go down on them.
Tough decision, you have one amazing collection. I like the poster that suggested adding the second tank. It would be tough to give up fish you have cared for.