So I can't guess country or such but will note CNET's TV picker at https://www.cnet.com/topics/tvs/products/oled/

You can select the 1 to 2 thousand price range and see what shakes out.

But that is not why I'm going to write. I want to warn you about your added frame. My bet is it will void your warranty since it will interfere with cooling. You might be a master maker and think it through so the frame never touches the TV and floats around the set without impacting airflow. Make it thin and just float around the set?

As to the Picture mode, sure but given the issues with image retention I would never do this.