Wow, he looks really young in that first pic- maybe should have still been with Mom!
Since the breeder you got him from is not a reliable as they should be- it would not be a bad idea to have a vet exam and fecal check done- to make sure Smokey is healthy and you can establish a relationship with a vet that can later do the spay/neuter.
He looks thin in the first pic- so it would be best to make sure Smokey does not have any intestinal parasites- as long as they are treated before the symptoms are severe there is usually no problems- but if there are any symptoms like diah, etc the parasites can be damaging the GI system.
You will want to offer unlimited hay- and a good quality pellet for young bunnies. Greens and veggies can slowly be introduced. It is amazing how quickly bunnies pick up good litter box habits- but once they hit the “teenager” stage they can rebel a little and be frustrating until their hormones settle after spaying/neutering. But house bunnies are such a delight that it really is worth every minute! Make sure to take lots of pics- they grow fast!
Julie