Join Date: Feb 2016
Location: Central California
Sounds good to me. You will be surprised at the speed of emersed growth once the plants transition - root tabs might not be necessary, especially with the topsoil layer. Emersed plants can also be 'hardened off' a little bit over time to tolerate (slightly) lower than 100% humidity. So eventually you could replace the plastic wrap with a glass lid, for example.
My biggest concerns would be fungus and fungus gnats. Fungus will melt plants very quickly. Gnats aren't a big deal once plants are established, but they will attack tiny growing roots and make cuttings fail to thrive. Keeping the water level below the surface of the substrate will help prevent both, and spraying a little hydrogen peroxide can knock out fungus gnats if you do get them.
My emersed plants had a problem with thrips at one point... they wiped out a few species I was keeping, but eventually disappeared. I never did figure out how to get rid of them.