Serial or not?

I've found a story that I "think" I was working on over 20 years ago, before I came out. I remember writing it but it could have been as far as the late 90's, or before. There is a shameful amount of correction work needing to be done.

I'm wondering if I should do it in Serial mode? I'm not trying to be another Angharad, really. Just thinking right now. It is one of those "Lost in Space" stories and I have no idea how long it will be now. I've been reading Sci Fi since before I was a teen ager, that means nearly 65 years, and I am concerned that I might be about to plagiarize someone else's story. I wouldn't commit such a crime on purpose. I simply can not remember everything back to before 1955.

I suppose that I will just go to work, eventually publishing it and if someone thinks ill of me, so be it.

Gwen