Wonderful story.
Many people post here about tragic craigslist stories and they go way out of their way to get these animals. Read this thread. Great recount of a person taking in a snake who didn't have any previously. If you have the means to get it and care for this snake for potentially 20-30 years, I would take it in a second. If you think you can care for it for a couple years and truely offer it for adoption later, do it if you can.