Right now i have two girl piggies, Cookie and S'mores (S'mores, though younger and smaller, likes to pick on Cookie sometimes), and they are in a 2x3.5 cage. I'm really looking into getting two more grid pieces, (for the cage stand) and some connectors and expanding the cage just a bit to make a 2x4 cage. But I can't decide if i want to do that or not, i was orginally just thinking of adding a kitchen area, but as i went downstairs this morning to see them, S'mores was picking on cookie and hogging all the food as usual and i am hoping expanding the cage could solve that problem. However, since i would have to buy new coroplast and liners and some extra grids anyway, im wondering if it would be more "worth-while" to expand to a 2x5 cage instead. Yet, having to buy even more grids than planned for the base. Would it maybe be sturdy enough to hold a 2x5 cage on top of a 2x3.5 centered below it? Or would i definitely need to expand the bottom too? Or should i just stick with my 2x4 idea?