Default New note 3 user - What are my options? (Device details inside)

Hi guys, i would like to root my phone without tripping Knox. What are my options? Also, after i do root, can i then upgrade to KitKat without loosing root?

Build number: JSS15J.N9005XXUDMJ7

Kernel Version:3.4.0-2019540

Baseband version:N9005XXUDMJ7

Android version: 4.3
Current Handset: N9005 // Previous Handsets:: i9305 // i9100 // HTC Dream ; )