Personally, I'd use the 10g in a different (quaratine) room until the baby outgrows it. With the little ones that I had, they were able to live in the 10g for a min. of 8 months. Pi**y was in it for just over a year, and Precious lived in it almost 9 months before he got too big, and this was feeding them every 5-7 days when they were tiny, and then every week after that. I liked using the 10g. I had a bunch of them on hand from my fish nursery days, and they were small enough to clean and move.

In about a year, you could move to something just a little bigger, then move on to the 30g. (This also gave me the ETS (Empty Tank Syndrome) that I just HAD to fill once they outgrew the 10g.....now Oreo my Kenyan sand boa has a permanent home in it. Flurry the corn and Crystal the LTR are both in 10g's and JUST about grown enough to move to a new home.

Good luck in your decision.