I'm picking up on Fi and Ne for sure, I could give you reasons your avatar (provided that's actually you), the way you write and in all honesty, your inability to decide. 4w5 is the most common for both so that's not really of any help but my call is INFP.
Also, no INFJ wants to be an INFJ because well, that shit's terminal, if you tell an INFJ they may be another type I'm guessing they would get excited. So your uncertainty says INFP to me, I don't think your lives are any easier but INFPs seem to be able to tune it out better with the dominant Fi. But shit, what do I know /: You should call somebody that's good at typing, 5 minutes on the phone with you and I could rule this out.