Welcome. My name is ***** ***** would be glad to assist.
Few items to address here.
1. Unfortunately, purchasing a fan form the US which is designed to operate at 120 volts, means you will have to install transformers for each location to drop the voltage down from your standard 230 volts.
The expense of doing so, will most likely make the fan installation more expensive than purchasing one designed for the 230 volts.
Plus less equipment to fail.
2 The Artemis would be a great choice for the covered awning area outside, it has great air coverage at approx 6500 cfm at high speed. It should be well suited for that area.
3. On the bedrooms, you would need to look at the room size for each one.
Then once you have the room size, determine the cubic feet l x w x h is the cubic foot area
Once you have that number, you can then look at the fans performance and find all those that will provide enough air movement for 1 1/2-2 times approx. of the room area at high speed. That is the number I prefer to use.
That provides good air flow at high speed and if too cool in certain times of the year, the lower speeds will suffice.
Then at lower speeds, it will still have great performance.
Example, a 20 x 20 room is 400 sq ft and if 8 ft high, 3200 cubic feet area
Once you find the ones that will provide the air flow, just pick the particular design you prefer for each room.