A nice loop for you to try sometime ..
Head out of the forest towards Chepstow through St Braivels (B4228)
At Chepstow head for the race course and follow the road all the way up to Monmouth (A466) .. Time for a quick coffee and admire the fortified bridge.
Option 1 ... Then back up into the forest on the A4136
Option 2 ... Follow the A40 to Goodrich, right onto the B4229, pick up the B4234 back into the forest.
If you go option 2 hang a left in Lydbrook to scoot through Joys Green, no number back roads Dog and Muffler is an OK pub and middling eatery, out through Ruradean (Who killed the bear?) and then back to Blakeney through Ruspidge and Soudley.
Enough variety to keep you amused at bimbling speeds, and not too lethal if you want to move a bit .. well mostly