I intend to use the 40ES on a 161" screen if I get the chance. I think it has the brightness and a 1.4 gain screen is what I would use for this to get best results. The lumens claim appears 'low' on paper, but in reality, it comes very close to reaching the claimed brightness, which puts it in the same league as the W1070 from BenQ which is what I am currently using on my 161" screen. So, I expect it would do fine on a 150" screen.
I have seen it in person on a 134" acoustically transparent screen (about .9 gain) and it looks good on that.