The Finches I own are two male Zeebs and 3 canaries. I also keep lovebirds ,Diamond doves, pigeons, a budgie, horses, cat, dog, rabbits and guinea pigs.. They own the place now

I've just set up some small indoor aviaries ( 160 L 172 H 120 W) in our spare room that the birds will be moving in to shortly. Hoping it can be a little more organized than the sea of cages I have currently!
Hoping maybe there will be space left in those aviaries to accomodate both my birds and breeding pair. I have never bred birds before but I would love to learn. Could anyone recommend an easy finch to start with for a beginner? I have been keeping birds for 4 years but never bred.
Thanks
Littlewings