Well the way the theory works is that you have your main type (which you have said is a Five), and a "wing", which will be one of the numbers to either side of your type. So you would be either a Five with a Four wing (5w4), or a Five with a Six wing (5w6).
I thought I was a 5w4 until the last couple of days. Now I think I'm 4w5. My interests seem to lean more toward the Five, but my moods and motivations to get things done seem far more consistent with the Four. Also, the need to define myself and express myself seems far more Four-ish. My intellectual motivation is only consistent with my shifting of moods, which I think suggests closer to Four, too.
There is a lot more to the theory which I could discuss in PMs with you, if you are interested in exploring it, and maybe we can understand it better together discussing ideas.
Thanks for the link, I'm reading through it now.
You might want to try:
http://enneagraphs.chez-alice.fr/pages/links5.html
I'll also PM you the chapter I typed up about the Five from a book I bought. (: