Hi Art,
Hope you don't mind but I moved your post down here to the blogging section. I just thought there may be more members like me who rarely venture into General Business or the other forums.
From my experience I would say that you are doing about average. There are paysites that I would have thought would do very well on my blogs that just don't. I haven't been able to come up with any logical reason for it.
As far as traffic, I would guess that you should be in the neighborhood of about 1k uniques per day at around the 6 month mark. From there it's hard to say. I've got one blog that's been stuck around that number for a long time now. I don't mind too much as it consistantly makes around $500 a month. Not going to mess with it as long as it keeps doing ok.
I've got others that zoomed past that to around 4k uniques in a year.
Good luck