You should be able to reverse the direction of the tongues if you want, though I am not sure if it will matter.
Yes a hallway is generally where you will put a saddle and break off from the room.
If the hall is narrow enough to do without any butt ends, and you want to eliminate the stagger, you of course can.
You can also switch to a more simple alternating pattern like:
1st row, seam on left
2nd row, no seam
3rd row, seam on right
4th row, no seam
repeat
Keeping them, uniform, and even, will be more important here as the walls will indicate any deviations. Don't assume the walls are straight and square. Use a laser, or chalk line down the middle, and measure off of that to the sides, for your seams.
Yes a hallway is generally where you will put a saddle and break off from the room.
If the hall is narrow enough to do without any butt ends, and you want to eliminate the stagger, you of course can.
You can also switch to a more simple alternating pattern like:
1st row, seam on left
2nd row, no seam
3rd row, seam on right
4th row, no seam
repeat
Keeping them, uniform, and even, will be more important here as the walls will indicate any deviations. Don't assume the walls are straight and square. Use a laser, or chalk line down the middle, and measure off of that to the sides, for your seams.