Which bundle of resources should I buy from GMAC?

Hi guys! I'm new to the Gmat prep and I'm looking at the options of buying study guides. What should I buy? Is the 109.99$ "GMAT Official Guide Bundle 2025-2026: eBook & Online Question Bank" enough for my prep, or I should buy an additional 79.99$ "GMAT™ Official Practice Questions Bundle" + some Mock test?

Thank you for sharing your experiences, I really need to know which one to buy or which sources I should take to prep!