What is the correct way to layout the pipe for the Soiree TKS960M set?

What is the correct way to layout the pipe for the Soiree TKS960M set?

I am building a solid frame(2x6) to hold the very heavy brass fixtures.
Water Supply Lines are just below the Top of the Tub and I want the Framing in place before Tub is installed. The opening in the wall approx 22" wide, between 2x4 beams.

Sometimes it is hard to find the words that will fully explain problem.
Hope Pic helps

Thanks

Sey

I got the answers to my inquiry, so I am ok, and will buy a lot of elbows.

Next question is:

Is it possible to plumb the supply lines to and from the valve before the
Tub is installed?

I would like to do it before the tub is installed, but am concerned that i would not be able to center drain and spout without first moving the tub into the alcove. Then I can move it out.

Can the Kohler k-1219-l spec sheet be used to find center?

Puzzled but project is always getting closer to completion.

When I have done all that I can, then i will get the expert(phoenix area)

Sey