Sicilian is not in my repertory and I want to include it.
I haven't read it yet, but after reading other books by GM De la Villa and some feedbacks I have read, I would recommend blindly "Dismantling the Sicilian: A Complete Modern Repertoire for White".
I’m surprised that nobody has mentioned the problem after ..b6 of developing Black’s Queen. One point of ..c5 is to give her effective development suares at c7, b6 and a5. 2..b6 takes away two of those options and severely limits Black’s possilities for counterattack.