It's always difficult to decide whether to release a track or keep it to your chest, people will judge you on the quality of what they hear, so it's always good to get your music out there, however, if you hand out too much, people won't bother considering the album.
I'd suggest, with things like demos etc, that you release, generate an interest in your stuff that is high enough to consider writing a side project of an album. I don't know how much self-promotion you've done, but if you haven't already, I'd recommend posting your stuff to as many audio sites as you can, and possibly even to youTube.
If there's one thing I know about composing, it's that there's always more music in there, so it's not like you'll ever run out of ideas
