Welcome Myjeepney! Many of us have installed HIDs in our '14s; do a search and read through the pertinent threads, such as this one: 2014 Grand Cherokee HID Kit Installation
You will need cancellers, AKA canbus fixes, for the low beam HIDs but not for the fog lights. Many of us installed the XtremeDigital HID kit from xenondepot.com
; they've got good prices and great customer service. It's a lot easier to do the job if you take off the front bumper - lots of tips on that in the pertinent threads as well.