Camellia 'Springs Promise' is a
VERY HARDY pink flowered camellia. It is one of the ice angel hybrids. Should do well in your climate and could be pruned to about any shape you would like as long as you prune it just after it flowers.

Check out the list at the American Camellia Society Website,
Luis

Here is a link that might be useful: Very Cold Hardy Camellias (Zone 6)

By all means, Mary, get to know the Ackerman Cam. group. Dr Ackerman started breeding these a number of years ago, & while the flowers are not as spectacular as the japonicas, they're quite beautiful & hardy. Ackerman lives & works in Montgomery County, Maryland - & I grow some in my garden north of Hagerstown. Also, don't forget that an enclosed courtyard creates a microclimate, especially if the enclosing walls are masonry; you could gain an entire zone in spots like that.

Here is a link that might be useful: Ackerman varieties