Yes, nice tour around you got there, the route will depend on the kind of riding you are doing, steady,looking around, stopping for pictures etc or zooming along enjoying the bends
A49 is a major trunk road, South Wales to North Wales, so lots of traffic moving at about 40mph.
So some smaller roads with less traffic will actually be faster.
But i can sure sort some routes out,oh and stop by for a tea,,if i am not out with you already.