Your external blinds, or external shutters are best to keep morning heat out. If the air Con in window is staying then external blind as you have now will allow air flow to ac.
You don’t have much wall space to draw curtains back off the windows and would block ac so if you want to keep the view out during day internal blinds to supplement the external are you best option, with 2 for the window with the ac.

Thankyou

I’ll also say you do have a lot of windows so could do curtains and let them cover some window when open. Hang the on rods much bigger than window and floor length.

Roman blinds hung high enough to expose the etched glass could work. Because there are so many windows floor length drapes will crowd the space and make the room feel smaller. You want to keep the focus and eye-line upwards keeping below the windows clean, therefore creating an illusion of space.

Love the idea of relaxed Roman blinds, you could do the relaxed or conventional, could look beautiful

Thankyou so much for the pictures. Thinking we will go for blinds but need block out due to the heat,.

You could look at day/night roller blinds, dual blockout and light fabric.

With the beautiful etching in the top and then the aircon on the bottom, I would look at honeycomb blinds. You can open from either top or bottom, no loose cords and they are the best at keeping hot air out.

https://www.luxaflex.com.au/products/blinds/duette-shades/