Thank you very much, @Jason D Yesterday, after reading your reply, I downloaded your Conan material, and it's already giving me many good ideas about mechanics, cultures, weapons, professions, and more for the game I'm preparing. I'm not familiar with the new Sanity system in BRP, so I'll definitely be taking a look at that soon, along with your other suggestions regarding Magic and optional Pulp rules.
@Ravenheart87 and @SDLeary, I appreciate your suggestion regarding Magic World and Advanced Sorcery. Being new to BRP, I honestly didn't know either of the two manuals, not even by name. But based on what you've mentioned here and what I briefly read in a couple of reviews online, I believe both resources will be very useful to me. For now, I've downloaded the Quick-Start rules for MW and I'm reading them.
Once again, thank you all for the guidance. I had my campaign project somewhat stuck because I didn't know which pieces of the vast BRP toolkit to use to recreate the theme I want without overly complicating things for myself and the players. Now I have a much clearer roadmap.