If the snake is on hold at a big box or store you're better off waiting and buying from a reputable breeder. This way you know you're getting a healthy animal.
I'd also make sure you're settled into your new apartment.
You also want to have your enclosure and all equipment up and running and dialed in before bringing the animal home.
Make sure your heating equipment is working and properly regulated by a thermostat. Without a thermostat you're risking serious burns, neurological damage or even death to your new pet. Make sure temps and humidity are dialed in.