This hobby is crazy addicting. I've got 4 tanks total right now and still want to add more.
The females in a 20 gal would be a great idea. I'd like to try that myself one day. You're going to have some large, long-lived, gorgeous goldies in that tank. Goldfish are some of my favorite fish, and it breaks my heart to see people mistreating them. But a story like yours is very heartwarming. I'd love to upgrade mine to a 75 gal, but all I have room (and money!) for is a 55 gal. We always love pictures here!! *hint hint*