If you set the system up as LVM you can grow the partitions if you leave space behind. Also suggest doing a test install to find out the desired layout, but based on install documentation.
Dont know about NETWORK Automation however it probably will reside in either /usr or /opt. You may need to concern yourself with SELinux if you install in the wrong location - SELinux is a bit of a pain!
Using LVM you can establish logical volumes for /usr and /opt and say starting at 8GB grow them if required.
/boot say 256MB (this has to be ext3 non LVM) swap say 4GB (you have 16GB ram so probably LVM partitions: / (root) say 4GB /usr say 8GB /var say 10GB /opt say 8GB dont need too much swap!). /home say 4GB (keep users off / ) /tmp say 5GB (in case NETWORK uses temp).
Thats 39GB of LVM which can expand if required to the remainder of the disk if needed.
