dbosman - thanks for the link! I'll have to peruse it thoroughly, and I'll take a look into some of the guppy breeding forums as well.
@Marko@ - Thanks, I guess trying to raise the fry in one of those net breeders would be similar to raising them in a pint of water....just with better water conditions. I'll take a look at the available space again (and my wallet

) to see if I can fit a 5 or 10g growout tank somewhere.
blisskr - thanks for the input, sounds good! I guess I will have to make space for a growout tank somewhere if I'm gonna try this, even if it's just for fun. And I think separating the females from the males as soon as they're discernable from one another is a good idea to keep the females healthy.
Thanks for the input everyone!
In other news...the female that was temporarily in holding in my 30g while I was waiting to make sure there was no more fungus in my 20g dropped her fry today, and some of them are swimming around and hiding in some pieces of of broken of Wisteria. I'm guessing that the Zebra danios and maybe the other guppies got some of them because I only saw about 5 or 6 still swimming around, but they've been doing a good job of hiding and they ate some food! So I might use virgin females from her (she was preggo when I brought her home) as my guppy breeding females.