Using "hammer host create" but do not power up yet


I am scripting creation of VMware objects which has gone OK and they build
fine but now I want to set a couple of attributes on the VM's not exposed
to the hammer options (hot plug enable of CPU/Memory).

So I can script that OK using pyvmomi/rbvmomi no problem but the VM's need
to be powered down to achieve that.

Is there a a way using "hammer host create" to not initially power up (I
set build/managed) and then set the attributes I need and then use "hammer
host start" ?

Or do something with hooks ?

Or do I need to wait for the build, host stop, set attributes, and host
start again ?

Any help would be appreciated.