If you are going to be moving away to college and you are leaving your animal(s) in the care of a friend, keep it as easy for them as possible. Stick with one until you can live somewhere that allows you to have your animals. If I were to get more animals, I would want to be the one taking care of them, not my friend.

Think of it this way, the price of spiders has been getting less and less expensive. By the time you can live somewhere pet friendly you might be able to afford more than just a spider morph