I'd stick with your placement for the wardrobe's but plump for built in's if at all possible. This way you could go with a slightly slimmer style that doesn't protrude as much and also have built in cupboards higher up for extra storage. It would be silly not to go higher when you have such a great ceiling height. I also think standard height wardrobes in a tall period property will look really out of proportion.
In terms of style I would suggest simple white victorian ones (pic 1) since they'll look like they've always been there (or paint in a moody grey or indigo for a contemporary twist like pic 2)
Alternatively a mirrored finish (pic 3,4+5) would work as they're opposite a window and will bounce back a lot of light.
For layout if you're worried about it being too imposing you could consider breaking up the bank of solid wardrobes with either an antique large chest of draws (pic 6) or a vanity table. Another route would be to incorporate some open storage along with the closed off bits so it feels more open and spacious (pic 7)
Q
color scheme very harmonius
Q