I need to get a bigger cage for 2 of my tiels cuz I think they are in too small of a cage. I have a chance to get a cage that is 35x30x18 and I was wondering if this would work

. I like the 35x30 but I would like it a little wider. Of course, the cage they are in is only 16 wide, which I didn't realize until today. What does everyone think?