Ave,
Both books and systems have their virtues. However, I'd suggest trying to do as much of the physical temple work as possible. It's the closest thing to a physical temple initiation, and thus is more likely to be truly transformative. There's nothing like creating and using the tools, too, and the Cicero version is closer than Lyam's to what you'd get in an actual G.'.D.'. temple. However, using both books can "fill the gaps".
LLLSHJ, Yechidah.
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