I agree...take a deep breath....don't tear it down...sometimes you have to work with what you got! Take her out, let wisteria have a chance to grow, and if you come into $5, go and buy a bunch of stem plants...usually can get 1 or 2 bunches for 5$. Tie your java fern and anubias to your hardscape (drift wood and rocks). Keep lights on 10hrs/day so the plants will grow, and wait until everything works.
If you have sand, yes put in snails...especially Malaysian trumpet snails....this will help to ensure your soil and sand don't form any toxic pockets while waiting for plants to root there!
Everything will work out...just might take longer than planned :)
Oh, and on your crypts: make sure the stems are buried...less melting :)
Just plant their roots and smallest amount of green part possible!
And yes, you can float anubias and crypts and java fern...at least temporarily.