Depends...have a read here comparing systems.
Compare Omni Systems
You can wire for everthing then terminate a your own pace whatever it is you have wired up.
The Leviton OmniPro II is the HAI flagship model. More geared for a large home or a commercial installation.
Baby steps relating to planning.
Look at the drawings of your new home and pencil in what you are wanting to configure.
(IE: inputs, outputs, maybe HVAC, maybe zoned audio, lighting, et al).
Pre-construction I would edit the drawings
During pre construction do all of your HV, LV, lighting planning.
During construction wiring LV / HV at this stage is very cost reasonable.
Wire for everthing and figure out a central wiring location or closet. Plan your HV for your LV stuff. (LED et al).
Have a read here:
Wiring Your New House 101
One home the security / LV / automation prewiring was done by an alarm company and me.
The other home I did all of the LV after the build.
My plan as of now is to use LED strips in the tray ceilings.
Figure out how you are going to install the LV/HV infrastructure for the LED strips in the tray ceilings and wanting them to dim.
IE if 12VDC lighting where will the transformer be? How will you dim them?
One Cocoontech member hired a lighting designer for the placement of the lighting in their home. You might want to consider this.