I currently have a radiated over a year old that is 205 gram supposedly female but nothing confirmed. Then I recently found another radiated that is for sale and I'm so tempted to purchase him. But he is 400 grams bigger. Do you guys think it is safe to mix them together? Currently I have my radiated in a 36x28x18 vision cage. It is just so hard to find radiated tortoises here in Los Angeles since I don't own a captive breed license or I am stuck to purchase them from a local pet store and pay an arm and leg.