One of the many reasons I would be worried to keep a large snake like that outside is the chance it may escape or another animal may attack it (break the cage etc.).

Another thing to consider is a wild snake has miles and miles of room to travel. If they get hot, they find a burrow or water to cool off in, if it storms, they can find shelter. Your snake will be stuck in a cage and you will have no way to regulate the weather and temperatures.

I wouldn't, for the snakes sake. I would find a home that would be able to provide indoor housing for it.

My thoughts.