Bubba po
Tiny Stonehenge Moment
I enjoyed it.
Not sure what advice, if any, I can give, because I don't really know exactly what you're aiming for. It's a very solid, dense track and you can hear everything that counts pretty clearly. If that was your aim, then you've succeeded.
I don't think it sounds half-hearted or overly amateurish, but just like a band that knows how they want to sound. The tempo wanders, but that doesn't matter if that's what your band sounds like. It certainly doesn't sound "wrong" in the sense of somebody attempting to recreate something and failing. I want to hear something else. 
Not sure what advice, if any, I can give, because I don't really know exactly what you're aiming for. It's a very solid, dense track and you can hear everything that counts pretty clearly. If that was your aim, then you've succeeded.
I don't think it sounds half-hearted or overly amateurish, but just like a band that knows how they want to sound. The tempo wanders, but that doesn't matter if that's what your band sounds like. It certainly doesn't sound "wrong" in the sense of somebody attempting to recreate something and failing. I want to hear something else. 