Your search for your type reminds me of my search. Here is some advice I would like to offer you:
1) F does not indicate frequent neurotic emotion. Here's a little secret: I would never describe myself as "emotional," which is what some descriptions emphasize. Most people I know peg me as a T, but I'm not. Logic is important to me, and if something seems more logical than my emotional reaction, I'm of course going to choose logic. However, what makes me a F is that I choose people as the end and not the means. I agree with you on immorality. I would never do something immoral in order to attain something that logic would deem as better. There are NO "necessary sacrifices" when it comes to people. Looking at temperament would be helpful to you: Are you an NF or an NT? NFs are affiliative/cooperative (not independent/pragmatic) and interested in motive (the reasons why people do what they do).
2) J's can be just as disorganized or messy as P's. The only distinction between the two is that J's prefer closure and P's prefer openness. If you're a J, then you like to have a game plan when it is possible. You don't wake up every day without having some vague idea of how your day is going to turn out. J's also tend to dislike last minute changes in plans. I'm personally a strong J. At about age 7 I stopped wanting toys and started asking my mom to buy me planners and notebooks (because elementary students have
such busy lifestyles!). I was fascinated by them.
3) At least you are sure that you are an introvert. It is notable is that some people want to peg INFJs as extraverts because we can be so sociable at times (extraverted feeling). However, they tend not to notice that we retreat into solitude after long discussions to "recharge." This also seems to designate us as the counselor for our circle of friends, whether we like it or not.
4) Elaborating on the feeling aspect: I relate to the F in INFJ through empathy. I consider myself highly emotionally intelligent. I understand my emotions and the emotions of others. Some descriptions even say that INFJs explore and understand the darker, more sinister aspects of the mind and human nature.
5) I also cannot stand people who fail to turn the cell phones off in the movie theater, and all such things. I would guess that it has to do with being a J in my case and my desire for structure. It's a simple rule that they even spoon feed us with a commercial right before the movie starts, yet some people just don't get it. And don't get me started on people who ANSWER their phone during a movie! My best friend used to live in a very... diverse area. There always seems to be one group of teenagers sitting in the back, having loud conversations and telling less-than-funny jokes. It really makes a vein bulge out of my forehead. It really ruins the atmosphere of going to a movie. Here's a useful couple of paragraphs:
Kathy Myers sparked this one. We were talking about Stonehenge (where I got married), and she related how she was disappointed when she visited Stonehenge because it was so crowded. But she says she shrugged and simply "tuned-out" all the other people so that, in her mind, she had Stonehenge all to herself and enjoyed it that way...
Kathy's preferences are for INFP, and what came up for me is that I don't think INFJs can "tune out" other people in that way. I think it's nearly impossible for INFJs to "disconnect" from the humanity around them. They overhear arguments and crying babies and flirting and all manner of interactions within the slightest earshot. Public transportation and restaurants can be raw experiences, depending on what kind of interactions they "tune" into. (Unless they're trying to solve a problem, of course, at which point INFJs can shut out everything like closing a door!)
6) One final characteristic of the INFJ is how they are very particular about their writing. I started this post at about 8 in the morning, and I'm just now getting to finish it around 4:15. (I of course had classes in between all of this, but I refused to rush this post, or any post.) Some profiles even call the INFJ the "master of the metaphor," in regards to their ability to spew out metaphors and imagery like fortunes in fortune cookies.
Anyways, when reading your very first post I identified with all of what you said. I think you are an INFJ, but that is of course for you to decide. I started out thinking I was an INTJ for about 3 months, and then when I went to career counseling I tested otherwise when they made me take the MBTI. I argued with the counselor, but in the end I admitted to myself that the INFJ profile fit me best.
If I think of anything else that might help you out I'll take the time to come back and post it here.
As far as INFJ or INFP, this website is dedicated to helping you pick between the two:
INFJ or INFP? a closer look <--- This website can actually offer you lots of information on type in general, so I recommend visiting it.