As always your writing is excellent Cyrano, and that was very enjoyable to read!
Do we have specific commentary by Spinoza about Epicurus? Not every materialist qualifies as an Epicurean, as the Epicureans displayed in the criticism of Democritus. Where would Spinoza fit in relation to Democritus in terms of skepticism and determinsim, two anathemas to Epicurus? I am certainly aware of Spinoza's reputation but have never studied him closely.