To Propagate a Vanda hybrid?

[voyager]

I never tried growing Vandas in AK, not enough winter light.
I now have a Vanda that I would like to move to another location.
I don't want to completely remove it.
I would like to "propagate" it to another spot.
This is the plant:


Here is the pic diagrammed as to what I'd like to do:


I want to cut the main stem at the location indicated.
This would leave 3 major roots [2 that go around the tree on the other side cannot be seen] on the upper portion and a large assortment on the lower portion.

There are no signs of any keikis having begun anywhere on the upper or lower portions. I do not want to kill the lower portion, but would like to start another plant[s] from it.

I have used keiki paste to enhance the propagation of my Dendrobium species before with good results. I have picked up some more intending to do it again with the new collection I'm starting.

Questions:
If I just hack the upper portion off, will the lower portion begin new growths on its own?

Is the use of keiki paste workable on a Vanda?

Other Ideas?