Novel idea with the guitar playing the beginning riff, when it 1st started I thought.. ooooo no no no no thats far too cheesy, but it does seem to fit quite well.
The main tune that play's, is a bit "airy" theres alot of reverb going on and it doesnt sound as "fat" as your newer stuff does need's a little extra punch, maybe if you can go back to it and reproduce it again I reckon this might sound really quite nice. (that bass you have I can hear its potential to make my ears rumble)
In the end though its your baby, and if you feel proud enough of it to release it, do it
