Good mix of genres and styles, and some really nice tracks. The Japanese style track is really convincing, although I feel the guitar on the fourth track could use some more punch and impact. I think you might be a bit heavy-handed on the reverb as well, particularly in the 2nd last track. Overall though the portfolio is really decent, and you seem like you've got a good grasp on quite a lot of genres.
In terms of pacing, from what I have read around this forum 5 minutes could be a bit too long - you might want to consider shortening the segments to their most compelling moments and shrink the demo down to about 2-3 minutes total.