I think your on the right track but in all honesty I would lose the faux rock and track down a nice piece of wood or nice stone from this site. It's a shame ro have nice looking live plants then have that piece in there that sticks out like a sore thumb. Really nice start though and welcome to the hobby my friend. This is a great place for advice so don't be afraid to ask anything that comes up. I've learned a ton here and it's honestly a lot of trial and error, many errors in my case.
Best of luck!!
Best of luck!!