Thanks, this is the kind of advice I was looking for.

What I've learnt from the good folks on SN:

1. WoS is a custodial "wallet" of convenience.
2. There are no backup seeds beyond an email to a Centralized entity
3. Phoenix may well be the next step up my Lightning ladder
4. There's more learning to do (always)
5. There are still more capabilities and higher ladder steps yet