We have Aloe Vera in the wild. Where did you read that?
Yes, I forgot about uppotting, you are right. They need to get big. My grandmother-in-law is nuts about aloes so have quite a few and they always go into very big pots.
And if the flowering requirement is darkness, not water and temperatures as would be indicated by imafan26's experience and my g-i-l's aloes then you can also try covering them to simulate darkness (if they are inside). It's a bit like calandiva that need 16 hours of darkness to bloom.