Enjoy your new zebs! I have three adults and four chicks that should be fledging soon. I love their meeps. My single male is pied and gorgeous and my pair is a normal male and my hen has a dusty tan chest but otherwise normal coloring. I bought them from someone who felt she was allergic to them. I tried adding a second hen from a pet store but she died. I am hoping to give my pied male a female chick eventually.
I think your names are adorable but if they don't feel right I understand completely. It took me about a month to find the right name for the bearded dragon I took in last year. I am her third home in four years and I wanted to give her a new name. I finally settled on Charlotte. It fits her well. My finches enjoy playing with hay, swinging on their swing, a plastic chain, unbraiding raffia or jute I put on the sides of their cage, playing on a basket, with plastic links, paper shred ( you will want to keep this very limited so they don't use it for nesting). I have natural branches n their cage they love to hop around on. They love to be talked to and will fluff up for you the more they get used to you I bet. Mine do. They also like having their cage decorated with fake vines as finchly mentioned. I have mine on the outside ATM. I am planning on making a couple decorations for them with decorative rocks and a plant. Keep us updated on how they are doing. My Pair became very stressed when their first clutch didn't survive but they turned around with a lot of tlc and extra care. I had to catch Maddie several times to care for her. She did fine. Cornering them with a small piece if cardboard helps. Once you have them in your hands they don't not squirm much and are hardier than you expect.
They have the 18x18x30 finch cages available online or at the big box pet stores. They are easy to connect if desired or they also make taller ones.
Hopefully Happy will be interested but not upset over the house guests.