I've checked and in England DA still offers Jubilee Celebration, but not Dove or The Endeavour. I'm a DA enthusiast and have a good number of them, both in England and in the south of France.
There is a huge choice but based on our experience, I would recommend Lady of Shalott to anyone - it's really vigorous and disease resistant, has a lovely scent and reblooms so well that it seems never to be without flowers. Claire Austin (white), Graham Thomas (yellow), the Generous Gardener (strong scent, pale pink), Crown Princess Margareta (which I bought because the scent was so lovely, but it does have rather vicious thorns) and Princess Anne (strong pink, changing to a lovely antique pink) are all also strong and problem-free performers for us in England.
And you might look at Olivia Rose Austin, which was introduced in the UK in 2014 - it's an exquisite pastel pink, low growing (about 3.5 feet) and very disease resistant. I've only had it a year but really love it - when he first introduced it, David Austin described it on his website as the finest rose he had ever created (they've removed that comment, probably wise from a marketing perspective!)
And if you like something a little different, Fighting Temeraire (one of my favourites) has lots of large single blooms of a lovely apricot colour. Very strong growing, wonderful scent, really healthy. DA put the height at 4 feet but ours are taller - around 6 feet.
I think any of these would be happy in your zone, but if you like I'd be happy to phone DA for reassurance?
