Welcome to Pet Talk and congrats on your soon to arrive new kitten.

Just to be safe make sure the litter box isn't too tall on the sides for him since he is so little, be sure to feed him kitten food for his first year so he gets all the nutrition he needs and sounds like you got the health part covered with the vet visit.

Like catnapper said, have lots of toys, somewhere soft for him to sleep (and he might like to snuggle with a soft stuffed animal if he misses him mom) and be sure to get him a couple of different type scratching posts or pads like carpet, sisal and cardboard. Each cat seems to prefer something different. Also encourage him to use the scratchers you provided so he doesn't learn to use your furniture or walls.

We can't wait to see pictures when you get him!