Hiya Carole, long time no see.
Obviously the bignonia and jessemine will give you coverage.
Are you willing to put the time in to frequently trim anything you plant?
How tall is the fence? Unless it's at least 6-8' tall it's going to run out of height to espalier anything.

Carole,
Your choice of camellia is excellent, they can take alot of sun. I was surprised how much sun my sasquanna takes.
The only concern I have is it will encase an air conditioner, heating unit.
They can give off alot of hot air in the summer, so I don't know how that would effect anything you plant there.
Camellias grow rather slowly, but you can probably buy one already esparilied already, sometimes they have nice sized ones at nurseries, but they are pricey.
If it is by an entrance, and you are willing to trim a vine mabey, another suggestion might be a confederate jasmine, an evergreen one is confederate jasmine "Madison", and they sell them at nurseries in the spring. They have beautiful very fragrant flowers from April thru June.
But the camellia would be gorgeous, if you can plant it by an air conditioning unit.