I don't think it looks too collectoritis. I think that as long as you keep the wood in mind as you trim, you can very easily achieve a nice background without it being over kill. When I saw the first sentence on my phone, I was like "oh no, not another natural scape with every species on the planet." But I think you did well so far, it will be more telling when it grows in. The background does make the wood's character show up more as well, which is a good thing.