Looking good.
What have you decided for the back wall? I saw some choices such as Pogo erectus, Rotala sp, Ambulia, B caroliniana mentioned. If you can get a hold of pogo erectus grown submerged, then go for it. I ordered some and it arrived emerged and it resembled an evergreen branch. Sent half to brookster and planted it. 90-95% of it melted away a week or two later. The surviving part is all that is growing now. I think Brookster reported similar results. I am also growing R wallichii and it is appreciative of strong light. The planted + seems to be doing the job but not sure how it will do yet. The B caroliniana will grow like a weed. Nice lime green color. I had Ambulia once but it did not do so well. But that was under a different light and different conditions.