Default [Q] Question regarding down/upgrading to root

My apologies if this is obvious to you all but ive been roaming back n forth over all the threads trying to find the best course of action. I am looking to root my device (c6903) to 4.3 rooted. I am currently running 14.1.G.2.257 I understand that this firmware cant be rooted and i need to downgrade to 14.1.G.534.

Q1 do i then wait once rooted for the OTA update or do i then backup my TA and flash a rooted generic 4.3 using flashtool?

Q2 is it better to just update to 4.3 generic unrooted and wait for this firmware to be rooted which i believe is being worked on. I have noted that my device can unlock the bootloader if this helps?

Thank you for any advice im a bit confused on which course to take