[Q] Unroot, Flash and Re-root SM-T325 topic

Following the somewhat dispersed advice in this forum, I managed to use Towelroot to root my TabPro 8.4 SM-T325 w/o tripping KNOX. As soon as I'd done so, a new OTA update became available, which I'd like to get, and then re-root my tablet, again, all w/o tripping KNOX. Based on what I've read in this forum, the following SHOULD work:

1. Unroot with SuperSU
2. Reboot
3. Check for persistent root access by trying to run Titanium Backup (which won't run w/o root) - Root Checker failed to confirm root on my SM-T325 for some reason though I DO have root, so I don't expect Root Checker to be any use in confirming unrooted status
4. Flash latest stock (from SAMMOBILE) rom via ODIN
5. Reboot the device in Recovery Mode (Home + Power + Volume Up)
6. Do a wipe data/factory reset.
7. Hope that does the trick
8. Replace kernel w Towelroot-compatible kernel
9. Run Towel root
10. Restore kernel from latest stock ROM

Are any steps missing from the above? Can any be safely omitted? I'd love to avoid the factory reset, but understand that can't be avoided when using ODIN to replace the ROM, even when the replacement is the latest stock ROM.

Many thanks.