I'm always glad to hear your advice, you're very knowledgeable! So I was wondering if you could clarify for my curiosity- I agree on scratching the elodea and cabomba. (I previously corrected my earliest post about cabomba, saying I meant water milfoil instead. I always get those confused.
Milfoil's origin is listed as Eurasia, but I'm not sure exactly where.)
But, anyway, I thought that sagittaria was growing in Asia, though not native. And I thought that there's talk that the Oriental Sword is not of the Echinodorus family at all, and there are thoughts of re-categorizing it. Do you have any info on any of that?
SmallFry, for low to moderate light, I don't know that you could go wrong with 1 or 2 java fern (the ones you already have?), java moss, enough crypts to fill in (get some red/bronze for contrast), floating water sprite, and a bunch of temple hygro (Hygrophila corymbosa) for one corner. Your apon bulbs might work for the other corner, but they'd be pretty big for a 10g. And then one focus plant... something with a contrasting leaf shape and/or color... but I can't think of what.
Its too bad that anubias is African, because that would provide a nice contrast in leaf shape.
I don't know the light requirements for a dwarf lily, Nymphaea stellata, but that could be a nice contrasting focal plant, especially a red variation. I think the rotala group is also from Asia, but that's another stem plant and needs higher lighting, so forget that.
That makes me think... what is your lighting? You said a 18w 6500K, is that a single bulb fixture? And what are you planning for hardscape?
P.S. I took a special interest in your project because you talked about being upset and sad, and wanting to lift your spirits. Aquariums can be great therapy, as you already know! That's why I got back into it, like you. I have a chronic pain condition that I've been struggling with for over two and a half years. And I had gotten pretty depressed. So we're both in a similar boat. I just wanted to let you know that I feel ya, and I'm proud of you for stirring up your happiness again!