WOOOO, fantastic beginning!! \@@@/
Yessss, I'm don't have any problem with its volume, but I don't like the synth that starts the melody. It's a nice choice, but it could use of some spicy effects to keep the croaky-croc atmosphere going, like echoes and/or something else. It sounds pretty dull (and loud) the way it is now.
Also, fill that soundscape with something else after the first melody line, add some more dynamics to it! Try not to repeat the same melody over and over again, or try to make some changes to it without making it lose its character as the track goes.
I like the break where guitar plays, by the way. Cool!