Size How many males in this cage? Should I get another?

[michellexgix]

I have a 2X7 c&c with a 2x2 downstairs loft. I have two males in it, I introduced them three weeks ago. All is going excellent. Im considering getting another male or two. How many males can fit in that cage?

Should I get another male or two? If so the new one(s) would be babies and the ones I have are 4months and 6months.

 

[GPigs77]

i would say 4

 

[michellexgix]

Would it be too much of a risk introducing another one or two to these guys?