We need pictures , what do you want from the window coverings like light control, privacy . We need info and I can’t imagine sunbrella as drapes.

The two fabrics are so very different they will 'drape' differently. The linen will likely be somewhat see thru and the Sunbrells will be stiff and opaque.

Why not first try ordering something to experiment with from Amazon and decide what style you are looking for first. If you're using them for dividers then the fabric must be the same on both sides. How do you plan to hang the drapes and how long on the rods?

https://www.amazon.com/slp/144-inch-long-curtains/krgwfug5m3e2437

Heres a pic, height is 120" (total is 123" I subtract three inches for the rod)

Width 221" (~18 feet)

Looking for light to come through, privacy but don't need blackout

I have looked at The Shade Store - its pretty pricey and I'm not 100% sure what I want yet - the two fabrics I'm debating between are Sunbrella and Linen - Linen will require more upkeep

I will also look into Amazon as you suggested for a temporary solution