Psssst, I don't think type 5 ENFJs actually exist...
However, in saying that, changing your type to type 5 would actually help you to develop your 5-ish qualities.
So yeah, feel completely free to put it as type 5.
Pssst I took a test and it turned out I am 5, however I was expecting 4 or 9, or maybe 7, I had no idea what what it would turn out to be, but over time, I was able to understand myself better, and reading the discreption after I took the test, I was able to relate to at least most of it, so.. (Feel free to ask me further questions if you're interested)..
I don't know if that would make me not a typical ENFJ, but I don't care I relate to it more than I relate to 2e..
Work for a cause not for Applause
Live to express not to Impress