A dilemma!

How can I travel South West to Toledo and keep myself safe? What route should I take? Looks fairly busy to me.
(Click on the image to enlarge)

Some isses are:

• Will the A42 allow bikes?
• How do I get to the A42 without being bowled over by non-bicycle friendly traffic?

I think a major challenge confronts me.

All will be revealed once I've got there on Tuesday evening.