How many in a cage

Hello,

I have finally found a breeder in my area, a long search.

What are the thoughts on having 2 adults in a large cage. The breeder says its fine and if they grow up together they wont fight - truth?

I don't have the space for 2 large cages (or the budget) - especially now that I've read that a more horizontal cage is better suited.

Do you think the 2 will be okay from 8 weeks up forever, or will I eventually have to get another cage?

Thank you