Android : Modifying android ROM to run only one app

I want to make my android tablet to be set to run only one app after booting, not even the home page could run then, it will open at the app and still at it forever, I know it's a common need and this has been asked a lot of times before, So, after searching I discovered that there is three options :

1- Creating my own Custom ROM.

2- Creating launcher application.

3- run a kiosk mode like surlock.

So, after a lot of search, I found that the third option can be easily broken be entering the tablet in safe mode and try to remove app then, or by removing it from accessing the tab by PC, and the second option can be broken by the same way.

So, all I got now is to use the first option, and I already know how to:

• setting up android kitchen.


• modifying ROM img files and jar files.


• modifying build.prop.


• generating the resulted Custom ROM.

So, all I want to know is how to modify the custom/stock ROM to achieve my requirement of booting to only a specific app. also if there is another way by making (System Backup ----> Modify ----> Restore Modified System) it will be great.