If you think you can afford to house another, by all means get it. If you get it, please be sure to quarantine the newcomer till its all settled; a vet visit is highly desirable and encouraged. Wash your hands well after you have handled the newcomer so you do not accidentaly pass any undesirables over to your other snake. Thats about all I can think of for the moment. I'm sure someone with more experience will chip in
P.S Also read through our caresheet if you have not already. Read the following thread, it may help you some.
Link