Welcome!
Sherry has given you wonderful advice.
The only thing I would change is that it is absolutely ok to harness train as early as you can. Even if you do not take your kitten outside, wearing the harness inside, in a trusted environment, imprints the feel of the harness so that it will be less strange and stressful when you do take him outside.
Quasar wore a store bought H style kitten harness on his way home from the breeder's, at 13 weeks of age, and doesn't even seem to recognize that he is wearing a harness. Now, when he hears the Velcro tearing, he runs to the back door and waits to have it put on because it means a trip outside.
I switched from the H style harness before trying to walk him outside because it was easy for him to get out of it. I bought a jacket from Mynwood Cat Jackets (mynwoodcatjackets.com) when he was about 4 or 5 months old. We up-sized it twice, as he grew.
The only time he escaped from it was when I did not have the Velcro fastened tightly enough.
You are in for an experience with your new friend! Bengal cats are a beautiful breed with behaviours like no other.
How bout posting a picture so we can all go, "Awwwwww...."?