Google wallet, play store and revolut


I'm currently running magiskAlpha-based root, and the time has come to switch to kernel-based root via SukiSu.
Primarily to regain use of google wallet.

As I don't have an "init.boot.img" file, is the method of selecting "boot.img" file to be modded within SukiSU correct?
I've got a patched SukiSU boot.img but when installed without completing the AnyKernel3 steps, it bootloops (As expected).
I've tried to use AnyKernel3 from within SukiSU Ultra but it fails to complete.

My current kernel is 15.5.10.226 based and I've not seen any kernels based on that for download.
So, am I correct in thinking that I need to extract my kernel from "boot.img" and then use AnyKernel3 to modify my existing kernel?