He was exceptional at the weekend, one of the best performances you'll ever see from a winger. But it was a wingers performance, not a centres. I think he can be a very good 13 but we risk giving up a generational talent on the wing to get that.
Personally I'd be starting Dingwall and Lawrence and if that doesn't work for the autumn I'd give Ojomoh a go. Only after that would I look at Freeman, and I'd be keeping an eye on a few others in the meantime.