first that knife ,the dinosaur eel (really a sengal polyopterus) the peacocks and the Raphael's will be fine in that tank I'm not sure about three peacocks though
I know 3 polys wouldbe okay in one for life
max size on the poly and the eels is ~12"
the cats get ~7"
The brown knife 8-12"
the barbs need to be in a different tank as the senegal will eat them once he hits 5-7" alot sooner than you think mine went from a skinny 3" baby to a thick 7" and growing monster in 3 months
move the clawed frog while your at it the sen could happily eat a dwarf frog but could be injured if it tries the clawed frog and it eventually will
the balas are only okay for now not for life as they are active schooling fish that can hit a foot long and should have more swimming space when they do
same problem with the loaches eventually they hit 12" but it takes a long time
the bigger problem comes along with the slow growth polys sometimes try to eat them if they are to much smaller than the poly and can choke
also rainbows you want one in a tank or more than 6 or they can become aggressive with one another
you will need more filtration than the out of box if you want heavy stocked tanks
all in all decide what you want to keep buy new tanks as necessary and return the ones you cant house
and welcome to MFK