If you clutter it up, use plenty of climbing branches, fake plants, and plenty of hides, it SHOULD be just fine. That being said, all snakes are different and the one you buy may want something smaller to start in. Also keep in mind, there aren't many snakes (beginner snakes anyways) that need or want a 60 gallon tank to start off in. What I recommend, if you don't want to get a different sized tank for a younger snake, is to find a nice smaller boa species (like a Hogg for example) but not a baby. You can get an adult or subadult male for around your price limit.