Looking at the Install /e/OS on a ASUS ZenFone 8 - “sake” guide and this is not your primary phone yet or you have a backup one, I guess you should be good to go: https://doc.e.foundation/devices/sake/install
The only issue I can think you might come across, is with the Vendor Image, that is probably dependent on actions of the Lineage OS community.
I added a few bullet points at the bottom of this thread, how I got the /e flashing working for my phone:
If this is still a an issue, I got the side loading working, when I was using an old version of vendor image that eboelens provided and keeps luckily alive: Dropbox - vendor_boot.img - Simplify your life
Give a try!