I have several questions about using XLB for wind simulation of a wind farm

[fred2019-dev]

(1) Should I set all the 5 faces(z = max, x = max, y = max, x = 0, y = 0) all to RegularizedBC ？
(2) Should I set the terrain surface to HalfwayBounceBC ?
(3) Do I always have to wait for about 1000 steps before the simulation reaches a stablized state? As I observed, the wind seems to first fill the grids in about 1000 steps, and then suddenly switch to a new and stablized state. Should I save a checkpoint of the stablized state? And if I start a new simulation of the same terrain, could I always resume from this checkpoint?

Thanks very much!