I have a good amount of ambient light during the day as the room is open on one side and the rest is white. At night we use no lights so its dark but there is a lot of reflections from the wall alone.you should be able to comfortably reduce the brilliant color setting to bring back some color luminance and still have more than enough output to fill that 150” screen (at least in a room with less ambient light).
I am looking at getting an ALR screen at 1.3 Gain (Elite Aeon), do you think it can comfortably create a crisp and colorful image at 130" - 150", if not I would revert back to 120".
In my testing on an offwhite wall it's obviously a nicer image at 120" (colour and resolution) but in my room that appears a tad small.
I can sit anywhere from 12-14 feet.