My first song

The tune itself is really cool.  Do you plan to add vox or keep it instrumental?

The biggest drawback and makes it a bit challenging to critique the rest of the tune is the guitars.  I understand you have no way of recording your guitar right now other than DI.  The mastering needs some work, sounds like you're lacking mids and some highs, and the cymbals are a bit too loud.  The mix seems fairly balanced despite the other issues.

If you want, I have Guitar Rig 4, and would be willing to run your guitar tracks through it (assuming you have clean guitar tracks).  It's better than DI alone, IMO.  I don't play the guitar, instead I use Electri6ity and route it through GR4.  If you want to see what GR4 sounds like, check out any of my tunes and let me know if you want me to do that for you.  I have custom presets as well as all the stock presets.  I can route your guitar tracks with different signal chains and send you the exports back so can you pick which one you want to use.

Just thought of this, but if you don't have clean guitar tracks, I could still route them through GR4 and just route it into an amp without any distortion or other effects in the chain, since all you're really missing is the amp anyways.