FWIW, I'm an ENFJ, and the most common result I'll get when I take MBTI tests is ESTJ, or ENTJ (slight prefrence for the former). I'll explain a bit about my experiences, and maybe this can help you sort through this some.
When people first meet me, it's not uncommon for someone to assume I am ESTJ. Granted, this is largely because I am very much a 1w2, and it does color things that way. I do put a premium on logic, order, and emotion-free thinking and decisions. For all intents and purposes, the way I think and act seems very Te on the surface. But, ultimately it's not. Fe can be emotion free and cold, and I'd argue it's more frequent that way. The big differentation is what Fe puts importance on, and how it makes decisions. It's much more apt to make decisions and organize the world in a subjective manner. Unlike Te which needs everything to be objective. Subjective "well, this was tried and sorta did this, so it has some value" has no place in the mind of Te and will often reject such things. Fe doesn't care, data is data to it and it will take it in and make it be what it needs to be. Inferior Ti is what keeps that in check so it doesn't get out of hand and start organizing things with no definition or "citations" if you will. In essence, Fe can be a little less scrupulous than Te, but it simply wants to get to the goal, and will do so by any means needed. Emotionality has no requirement for Fe. It's common for Fe doms to be emotionally expressive, but it's not a requirement.
As far as Si and Ni, I also relate to both of them. On the surface, I appear more Si like (again cause of being 1w2), but that's not the case. I use Ni as the way I intake information is not linear, nor exacting. In truth these functions are the hardest ones to define. What really helped differenate in my case, is I do not relate to Ne at all. Where as, I do relate to Se, and actually use it more than I give myself credit for. So if you have trouble identifying between Si or Ni, look to Ne and Se to see how those fit in, as tertiary functions are usually fairly easy to identify and relate to.