As for planning and leadership in the SEALs, you would spend longer on a detachment as an enlisted SEAL than as an officer. Both are extremely rewarding in their own ways, and in both cases you'd end up doing a variety of non-operational assignments.
Please heed what Scout just stated. You need to realize that even as a SEAL you will have a second job when you are not deployed, and that is paper pushing in some form or another. You will not spend 100% of your time training or deploying.
Our neighbor when we were with the 82nd was a SEAL, actually awarded the Navy Cross for his involvement in the Somalia invasion (Black Hawk Down). They lived next to us for 2 yrs. He was only deployed about 1/3 of the time, the rest of it he was training at Bragg, but he was also the DO so he was doing a lot of paper pushing.
As it has been stated multiple times keep the dream, go 1000% for it, but don't confuse the dream with reality. To me, it seems that you are more wrapped up in being a SEAL and their missions and not realizing that is only a fraction of what your life will be like. '
Want to know how to have the longest operational SEAL career as an officer? Besides, not getting injured, accept the fact that you will be pushing paper and leaving the SEAL team for career progression. Our friend who was the SEAL, also attended every PME in residence before arriving to Bragg (that is @3 different schools, for a total of 3 yrs by the time he had 14 yrs in). When Bullet went to CGSC, he had SEALS in his class. They not only were in the class for a yr, but the majority of them went onto the Pentagon. They knew the only way to get back operationally was to earn rank and come back in a command position. In other words, they pushed paper for a total of 6 yrs out of their 20 (3 yrs school, 3 yrs desk).
If you want to be a SEAL and only a SEAL, never push paper, than you probably need to think about enlisting. If you enlist, than you need to ask yourself if you will be mentally/emotionally fulfilled on that track. Neither track is right or wrong or better from a big picture standpoint, the only difference is one is going to be right for you and one is going to be wrong. None of us knows what is driving your heart. If you can say I only want to be a SEAL, regardless of rank, than maybe NROTC is not the route for you and enlisted is. If you only want to lead, preferably SEALS, than NROTC is a fit.