When I imagine this scape in my head, and considering that I don't know you're planned wood and rock work and hardware setup, but just using my imagination, it goes something like this...
1 Temple Hygro in left rear corner.
Multiple Apons in right rear corner.
Plugs of Dwarf Hairgrass in right fore-ground.
1 Water Sprite
floating middle top.
1 Large Java Fern
center. or left of center.
1 Small Java Fern
left fore- to mid-ground.
1 Red Crypt right mid-ground.
I hope you can imagine that. I wish I could draw you a picture of what I mean!
To me, this gives nice contrast in heights, leaf shapes, and colors. But, since I've never scaped a 10g, maybe that's too much. When I don't have the actual plants and actual tank to play around with, I cut out a piece of paper the size of the tank footprint and a piece the size of the rear wall. I tape the rear paper to a wall and put the footprint on the floor in front of it. Then I take a pencil and draw circles for the footprints of the plants in their intended spots, and that gives me a much clearer idea of actual spacial relations.
So if that's too much, you could ditch the Temple Hygro and one of the Java Ferns.
I agree on ditching special substrates. With liquid ferts and maybe root tabs for the rooted plants, you should be fine.
Just my thoughts, I hope you can decide what you want!