Default [Q] Update to 4.3 with root

I am currently rooted and running the Wicked v10 rom which is 4.1.2. The developer stopped updating this rom but it still is a fantastic piece of work. I want to try a 4.3 rom but have a few questions. First do I need to unroot to do this? Are there 4.3 roms that are already rooted? Finally can someone point me in the right direction for a 4.3 rom thats rooted. I aprreciate any hep and thank you in advance.I have a T-mo SG3.