I'd like to add mono-complete and ecryptfs to the Kali Linux ISO.

Do I simply boot the Kali Linux CD (or USB), install the programs during the live session, and run the following commands?

Code:
apt-get install git live-build cdebootstrap
git clone git://git.kali.org/live-build-config.git
cd live-build-config
lb config
lb build
Or is it a more involved process?