Chance of success building "wrynose" core-image-minimal for Orange Pi 5 Pro?

  Even though wrynose is not officially out, a colleague handed me an
Orange Pi 5 Pro ("Orange Pi 5 Pro 16GB LPDDR5 Rockchip RK3588S") and
asked me to see if I could configure and build a simple image using
layers that were as close to imminent wrynose as possible, so while
I've just started a build in another window, can I impose to see if
anyone can spot any flaws in what I'm doing, or perhaps say that just
isn't going to work?

  First, the repos I'm using:

  - bitbake: branch "2.18"
  - openembedded-core: branch "wrynose"
  - meta-rockchip: branch "wrynose"
  - meta-arm: branch "master" (no wrynose branch)

Relevant part of local.conf (as I don't see a machine file for the
Pro, I'm using the one for the Plus):

  MACHINE = "orangepi-5-plus"
  DISTRO = "nodistro"

That's pretty much it -- all the fetching succeeded and my laptop is
chugging away building "virtual/kernel" before I move on to building
the remaining pieces and the final image. Is this at least a
reasonable first attempt to get a simple bootable image?

rday