[cypher]

It's a bit difficult to make suggestions not knowing what might be available for you, I just did a quick google & couldn't see much as most seemed very small.
What you want to aim for if you can find it is something around 80x50cm, not too tall to avoid bar climbing accidents, up to about 40cm is usually ok, bar spacing needs to be no more than 1cm.
The hamster heaven (used without all the tubes & penthouse) is a an example to give you an idea of the kind of size you would be looking at. Accessories aren't up to much with most cages so you might want to make your own shelves etc which is easy enough.
If you can link to any cages you're considering it would be easier to comment on how suitable they might be.