In my mind the most logical way would be just in front of the peak on the left in your crop. Otherwise it tends to feel cut off to me. If I ever do print it I am gonna have to crop in different. Otherwise its gonna be very odd sized. lol. Something like 50 inches by 10 inches. lol
The crop was just an example - at least it's your decision but I would decrease the foreground. A panorama would be great - think about someone who's standing in front of the print and is talking "oh let's have a look whats in the right ... and what we have here in the left? ... and his eyes are wandering above the whole print.