I would not bother with the BOG reservation. The ONLY advantage that *might* give you is with 7 dwarfs mine train. I would probably try to book a FP+ for that. Head towards Big Thunder, Splash Mountain, or the other way for Space, Buzz Lightyear, and Tomorrowland Speedway, or to Fantasy Land to do Peter Pan, Pooh, then probably Haunted Mansion. You should be able to do either Tomorrowland, Fantasy Land, or Adventure Land / Frontier Land pretty much in it's entirety at rope drop before the lines get too bad. Which ever way you are heading at Rope Drop, use your other two FP+ (as you used the first one for 7 Dwarfs) to book the big rides in one of the other lands. So, if you started with Fantasyland, then perhaps use your other two FP+ for Space Mountain, and Buzz Lightyear. In this way, between rope drop, and your pre booked FP+, you should be able to hit all the big rides in 2/3 of the park. You can then use the refresh method to search for 4th and subsequent FP+ in the remaining land, as well as hitting rides that don't usually have long lines, like Monster's Inc, the People Mover, Carousel of Progress etc.
Try using an incognito window in Chrome.