I would go with a T10. I got all my gals in T10s with a shelf and it works fine. If after a couple years, the T10 gets small, you can always upgrade to a T25 which is what I probably will do in a couple years and then just use the T10s for something else. I have both Constrictor NW and Animal Plastic cages and I personally like the AP cages much better. They are all smoothed out around the corners and the shelf is nice and they are built very solid. They only downside is they are heavier but again, I like then a lot more. Plus the door opening on the T10s is just over 10" while the 48x24x14 Constrictor NW cage is only 8". That 2" makes a huge difference in getting my big gal out without banging her on the door opening, plus like I said, the AP ones are all smoothed an finished on the door openings. Like Gio said, without genetics, who knows but if you ask most breeders, a lot keep them in T10s with shelves. Its the biggest you can go without a huge upsize in shipping cost. For example, the T25 will cost me $229.00 shipping vs $50.00 for a T10.
Oh also forgot, be prepared for a 3+ month wait for cages lol. I waited 13 weeks for my 3 AP10s I ordered over the summer. That's the only downside, otherwise the cages are really nice and Ali is awesome to deal with. I will definitely be getting all my cages from AP from now on![]()