Welcome to AA!
Do you use a gravel vac when you do water changes? If not I would, you could always use fertilizer tabs for your plants when you get them. I would not "neglect" (for a lack of a better word), your gravel for plants. Now I am not a live plant expert as all mine in my tank now are "fake"
My step son has a few live Java Ferns that are doing great now and we clean 25% of the gravel with a vac every water change. You just have to be careful around them. But the rest of your parameters look good.