Hi! I have a 2by4 c&c cage with an upper level that my piggies love. Now that it is springtime, I want to be able to take my guinea pigs out during the day to let them munch on some grass. I will not be leaving them out during the night. I will just being take them out for some running around and munching. I would like to let them have lots of room to run around. Do you guys have any ideas of what I should do?