The tendency that we have when we are not sure of something is to hide it in the back...... This has a nice atmospheric aspect to it..... don't hide the piano.
I would bring the piano up in the mix since it appears to be the main instrument. There's not much wrong with what and how you are playing it except it needs to be the spotlighted instrument. A few db's would probably be just about perfect.
The gong has to go.... it serves no useful purpose.
I would probably start it a bit different if I was mixing it.... Just piano and some light strings. Let things come in as it goes along and builds.....
That's just me though.... good job on this and a bit different for you,,,and I like the style.