Don't bother with the 10gal, read the site below: http://www.saurian.net/htm/frogcare.htm
Small shoebox is the best for them for the first month or so.
Patrick at Saurian is a great, and has great frogs also. I just bought my 2 Azureus from him. They are amazing.
Good luck, and i'd make about 2-3 cultures a week until you figure out how much you will need. I make about 4 a week for 5 frogs, and it seems to be enough. I started making cultures about a month or so before I got my first frogs (leucs) and it helped me a lot. I had tons of flies ready when they showed up.