So I normally don't like the look of fake plants and decorations other than rocks and DW, but the way you did it makes it look really nice.
Goodluck with changing your substrate!! I did that on my 28 after having to see my clown puke gravel (left over blue, black, pink, and white from old tanks mixed together) in there for too many months. It was definitely a chore, but now that I've done it, I'm much happier with the overall look of it.
Chances are that you will go through a mini cycle after changing substrate, I did, but it shouldn't last more than a week, so make sure to keep a close eye on your parameters after the change if/when you do it.