The master bedroom in my previous home faced north. Floor to ceiling window getting full sun during the day, and a street light directly outside at night. So, an exterior shutter, internal blind and curtains allowed light and heat control for various times of day and season. The master bedroom in my current home also faces north with a floor to ceiling window, but no street light. On full moon nights though, it shines right in. Once again an external blind controls light and heat, and interior blind and curtain gives me options for different times of day and season, eg. we love the sun coming in during winter, but not summer.

what about a screen fixed over the glass, same size as the windows and made with Sarlon shade cloth with dark frames the black cloth is just like looking through fly screen but provides shade over the whole windows..window blind makers should be able to make them for you

Hate vertical blinds too! So much so put curtains on my sliding doors. On my casement windows have holland or cellular blinds as easy to pull up to open window I suggest block out blinds which can perhaps be made big enough to cover all or at least half windows so gives you flexibility re light control if separate controls without having too many separate blinds

Thank you everyone. Decoro, I am afraid I am in Regional Vic., but thank you for the offer. At this stage I have decided to go with sheers but not right to the ceiling - I am going to try them hung from about 70cm above the frame, which is almost level to the ceiling over the kitchen. That way, they are still higher than the window itself, but still leaves me with the 'sky' views through the clerestory windows. The other windows will have double rollers, in a dark, charcoal colour for both the sheer and the block out. Again hoping that will look OK, as most people go for lighter colours (ie white) but all of the walls are Dulux Whisper white, and the window frames are black. When the blinds are down at night, I didn't want to be surrounded by white. Fingers crossed I've made the right decision.