u/Foreign_Ad5068

https://preview.redd.it/9x9e7iu9q51h1.jpg?width=2329&format=pjpg&auto=webp&s=792da38b873b774eceb3158438cb09de887d8846

This is what the BenQ app gave me for measurements. Maybe a dumb question, but will my swing path going through the projection area (shaded) cause issues or since it's just for a split second its fine?

Looking at either 9' x 16' or 10' x 18'. Will I have to worry about any sag in the screen since it's a long span? If so any tips to help with this?