I think you should put them up no matter how many
you have. I enjoy looking at galleries no matter
what the size. Its also fun to see galleries grow.
I had about 25 cels when I put up my gallery in
November. I would have put it up a lot sooner but
I am incompetent when it comes to the computer
and I had a lot of problems. (It took about 1
month and a lot of advice to get it to even
upload properly onto geocities.)
I update fairly regularly. At least once a month,
if not more. I usually don't announce it though.
(The site is slow to upload for many people and I
don't have the skill to figure out how to speed
it up.) There are currently about 70 cels now and
three more on the way.