Dd is wanting some guinea pigs. After loosing some hens to foxes we want to keep them indoors when we are not around to supervise. Our indoor housing options are fairly limited due to house size. Option 1 is to have a 100 by 50 plastic store bought cage, then buy foldable run to pop them in for extra space. Other option is to build a raised cage (for space underneath for food etc) but would be 60x50 with a raised platform 60x30. With the option of foldable run for space also. The raised option would be much better for us as space is limited and the 100 cage is ginormous. I have read shop bought cages are fairly frowned upon for being too small.... Do any of these options sound ok? There would also be a run outside for warmer times. Or should we avoid guinea pigs??