Last half of a mix I'm working on. Any opinions/advice/recommendations?

http://soundcloud.com/goomba-joe/last-half-of-chill-mix

First and foremost, ^there's the last half of this mix I'm working on. I'm still working on the first half. The last 10 minutes of what I posted are less ambient than the first 10 minutes. I wanted the center of the WHOLE mix (so the first songs in this) to be more ambient.

I've done plenty of big, face slapping, huge DJing and mixing for shows/etc. This time I wanted to do a mix that you put on in the background. Relaxing, chill, nothing that really steals your attention. I want people to be able to hang out with friends, have some beers, and throw this on in the background for a good mood.

Do you like what I have so far? This is the end 20 minutes, I plan on working up 20-40 minutes to go before this.

Any advice on improvements (besides fixing the two mistakes [if you can tell they're there]).

Any songs you think should make it into the final mix somewhere?