In the op you mention getting rid of kingo and installing genuine root. I don't understand what you mean by that?
I do not intend to try custom roms because they will trip Knox and void warranty. That said, is there any advantage in using safe strap and changing to genuine root?
During kingo process must I allow installation of mkt camera?
Beamed from my Galaxy Note 3
At the original time of this post Kingo was considered very unreliable, in fact it still is not a truly a trusted source, but instead it has grown into a dependable source for Root. Kingo extracts information during the Root the process and for many this violation of privacy is not something any of us enjoy especially when our IMEI# is part of that extraction and who knows where this information goes. To explain the meaning behind the kingo root and replacing it with a genuine root. Think about the movie Ace Ventura Pet Detective. Think of the moment when Jim Carrey has just discovered that Detective Einhorn is a "Man" and he is swallowing tubes of toothpaste and burning his clothes. With Einhorn and Kingo the damage has already been done, but with SuperSU we can wipe the slate clean, that is burn down/sanitize and replace completely replace Kingo Root with a Geniune new Root copy in fact so perfect in form that it performs Chainfire's command for root- which is Root in it's purest form (can't get more Genuine than that.)
Now, if you want to proceed with root you must follow this thread as the Firmware has been updated from first MI9 to MJ7 to MJE,
the link is here. I would recommend going through Steps 1-3 in that thread, Safestrap has been updated to version 3.70 which I happen to like the update as it performs better even in the Beta that it is. Creating backups are important, the reason is backups are essentially ROMs, the difference is that they contain all of your settings and the data that stored on them. While I certainly understand the concern about Custom ROMs, there is a greater concern that is often overlooked. If you plan to do any customizing to your stock ROM it is much better to customize a Custom ROM, then a System ROM. System ROMs are used for Updates, if something is missing or not configured correctly you can spend hours fixing it. Use a custom ROM that you can play with change, do whatever you want with, if it breaks, your system will not break, because you have a System ROM, but if you break your System ROM then you will have problems.
Last, I'm not sure what you mean by the "mkt camera"?