Hello and welcome! How lovely to see Norbert looking nice and relaxed in his environment already.
I've been bitten by 2 of my past syrians, both rescues but it was my fault on the one occasion. I went to the rescue and the hamster had just woken up, I didn't know this. I put my hand in for him to smell and he bit me. Still took him home though, and that was the first and last time he bit me. The second time was from a female who was about to have a stroke and then before she had a seizure. It's enough to make you yelp and bleed but that's it. They only bite and draw blood because of pain or fear. You may get a test nibble so you may feel varying degrees of pressure but doesn't break the skin. Personally, a quick nip off a guinea pig is worse and a few of my rats have nipped harder than the syrians bite (but somehow didn't break the skin). If you're worried put on some gloves until you're both used to each other.
Regarding your set up. It looks good and there's nothing I'd be in a rush to change. Maybe in time add a few more hides, few forage sprays (millet, dari, wheat etc) Maybe get a larger dish for the sand if he uses it. I've had syrians use it as a toilet and others have loved to dig around in it. If you want to use a different substrate to add a variety of textures then fitch is great like already mentioned, but I notice there's a bag of megazorb in the photo's, you can also use that too.
Out of curiosity, what size is the wheel?