I tend to read this board more than I post, but since you asked...
I really liked the guitar parts. Very original. The harmonies were great, and the melody is catchy. It's a little long, but my favorite part was after the break. The intensity changes and steps it up a notch.
As far as having a "real" drummer redo the drums, I think your ok either way. However, the better each part sounds, the better the song sounds as a whole. So if you know someone who is willing your not out anything...it could only make it better. But the drums were pretty impressive considering it's not your main instrument.
Overall, good job.