Betta Fish: My new boy

So I just bought this beautiful boy Betta off an eBay buyer from Thailand. He just shipped out and will be here within the next 3-5 days. I know he's going to be very stressed. I still have all of my supplies from the last Betta I owned. I would like some advice on how to set up the tank properly before this little boy gets here. I want to spoil him very much.