It looks like Hebe Caledonia, but there are so many different types this is just a shot in the dark.
might be worth a look at some pictures of this type.
Could it be a Hebe,? Not sure which.
Have you had a good look at the blooms? Have they got tiny black insects on them?
Sometimes you get a thrip on a daffodil bloom which will decimate the bloom.
Charlotte pots are second earlies so you could wait a bit, although the shots are long enough.
If you live up north or Scotland I would wait, the ground will still be quite cold.
I know this is going to be a strange question but does it have infa red does it do night shots, I didn't have a problem with night shots so don't know the answer.
The maker for Swann are really friendly I would give them a go.
I thought cerinthe as well, the common euphorbia is more erect than what is showing in the picture.
I'm in the South West and mine have been showing for about a week.
Can't think of any reason not to especially as it's still quite young, try and get as much rootball as you can and don't forget to keep it watered especially the first year you move it.
It looks like a cryptomeria a lovely tree which changes to a lovely bronze in the autumn, yes it does make a large tree.
I have never looked closely at Berberis but having seen your pictures I will now do so, it is really beautiful and like you pointed out just like small daffodil blooms.