Trying it with the SuperSU option worked!
When you say that newer versions of Magisk can conflict with Aroma - do you mean only when it's integrated with the Aroma installer? Now that the phone is up and running, can I safely switch from SuperSU to Magisk?
If so, what's the best way to do this for this rom?
---------- Post added at 03:43 PM ---------- Previous post was at 03:04 PM ----------
I tried installing with the Privacy Guard option and then flashing Magisk - but this didn't work either. I still ended up stuck on the Samsung logo screen.
I tried modifying the Magisk installer as recommended by the dev here. But that didn't help either.
Is there a known way to get Magisk working with this rom?
I don't know about Magisk, I couldn't switch from Super SU either, but here's what I do if I get stuck at Samsung logo loop on startup (fe after deleting ART/Dalvik and Cashe from TWRP): after the loop starts, I take out the battery, then press the power button several times with battery out, then return it and turn on the phone - and then it boots up fine. Hope it works for you.