If your wife hired me to tie you up in front of the 125, and make you watch me plant a simple scape, much like the rehabilitation scene in Clock Work Orange, this what I would do:
Dwarf Sagittaria - 200
Rosette Sword Plant - 9
Amazon Swords - 3
Red Melon Sword - 12
No LOOK>>> Start of new hardscape..advise needed
@ post #23.
Take out ALL the rocks on the left and 1 of the 2 in the center. Plant the 3 Amazon Swords in the right rear, in a triangle, 1 in the corner, 1 along the right side, 1 in back next to the corner plant.
Cluster the Rosette Swords in the front middle under the driftwood.
Plant the Red Melons in a Isosceles triangle in the left rear with the longer side of the triangle along the back of the tank.
Fill everything else in the left/center with dwarf sag.
Once you agreed to leave it alone for 3mos, I'd untie you.
The less variables, the less can go wrong.
BTW - I would dump in an arm full of Hornwort or Water Lettuce until we got your tank in balance and the plants were thriving, maybe 2-3 wks time.