How quickly do they grow?

[Mitch]

Hi

I am just wondering if anyone can give me some advice on roughly how quickly a baby boa will grow?

I am due to pick mine up in a couple of days and need to buy a suitable viv, I don't want to buy one and then have to replace it again in 2 months.

I have been looking at one that is roughly 2.5ft by 1.5ft any ideas on how long that might last?

The boa will obviously be well looked after and well fed.

Any help would be much appreciated.
Thanks
Paul