1) ALL of the value villas are at jambo. every single one.
2) i have only stayed in the value studios but i've had 1 savanna view and 1 parking lot view (some pool view rooms are also available). you cannot request a view when booking value rooms, just hope for the best and enjoy the lower point cost.
3) i think there are at most 10 value 1BRs, so i would book exactly when the 11 month window opens to be safe. but i think if you book or waitlist right at the 11 month window, you are very, very likely to get one.