It is good to explore, but neurology and neurosurgery are completly different fields. Most neurosurgeons I've met were always really interested in surgery first.
Neurology is not difficult to get at all. Just study hard and do well on boards, unless you already took step 1. In which case, that'd be good information to have to gauge your level of competiveness for something like NS.
Lifestyle of NS is crap for most people. Neurosurgery is one of the furthest things from a lifestyle type specialty. You can sit back and do spine surgeries all day, but then you have to deal with back pain patients all day as well, which is considered an actual level of hell by many people. I truly think the best neurosurgeons who are happiest feel like they were born for that position and nothing else. It just calls them. If they HAD to pick another specialty, it'd probably be surgical or maybe interventional rads or something. That is just the vibe I've gotten from a bunch of them and have heard a few say. Small N, but I'd be surprised if I heard a happy neurosurgeon say they really loved dermatology, anesthesiology, or some other "lifestyle" (subjective of course) specialty as much as NS when they were a student.