Do you think they will be ok under a LED light which I would say gives moderate-high lighting? And which floating plant would work in the tank?Skip anacharis, it a cold water plant. I have kept most of your other plants at various temps., I'm not sure about salvinia temp preferences, I've probably had it, I belong to a plant club.
For lighting, I have to say I still use old school T-5s, so I'm maybe not the best to comment if you have LEDs. The only 1 I have doubts about is L. repens. I keep the hybrid of L. repens x arcuata quite happy, but L. "red" I don't.