In my opinion, the first time hedgie, should be a baby. It would be easier to pick up, littler train, and all that good stuff. It is hard to tell what is the personality of an older hedgehog, if it likes/or not being picked up. It is hard to tell if hedge is healthy, if at the time of adoption it sits curled up in a tight ball. You might just end up with a little "sea urchin" that will hiss and "pop" everytime you try to pick it up. You would need a lot more patience, lots more time to bond with an older one. Although some hedgehogs are more friendly than another ones, so you might just get lucky adopting one like that. It is your call, but I would say, get a baby 
