I missed this one!, shame on me and all credits goes to P-O Axelsson and Bosse Törnqvist for letting me know (A beer sometime?)

Fixing the “Final Reboot in a LiteTouch scenario” Version II

This is the built in “Final reboot”, it does provide the basic need of rebooting. Using the “use shutdown in a TS” method gives you the option of adding a reason in the event log and to set the time before it reboots. This method just reboots (And that can be perfect in most scenarios)

Value	Description
Action	SHUTDOWN Shuts down the target computer. REBOOT Restarts the target computer. RESTART Same as REBOOT. LOGOFF Log off the current user. If the target computer is currently running Windows PE, then the target computer will be restarted. blank Exit the Windows Deployment Wizard without performing any additional actions. This is the default setting.

so if your customsettings.ini looks like this:

[Settings]
Priority=Default

[Default]
FinishAction=RESTART

it will reboot after install

Have a nice Deployment day
/Mike