We just fenced in our back yard and i have designated a 700sq ft area for my torts (they are babies now, but give it a few years ) I was wondering if this would be enough space or should i give them more space. the space is 15' by 40' i also have on the other side of our house where the gate is a 5' by 30' area. The larger area has an orange tree planted in it, im still not sure what to do with that, whether leave it for the shade or remove it.