Duration of Heaven

I've been thinking that heaven is of finite length, but repeats everlastingly. In other words, assuming that God is of finite "size", he has finite memory with which to store who we become and what we do. So once we have become ourselves, we live in heaven for a while, and then God deletes some or all of the events that transpired after we entered heaven, so that we can live new lives in heaven. So we have everlasting life, but each particular timeline / life is temporary and gets undone.

If that is the case, do we have any idea how long each of those lives lasts? What is the duration of heaven (in the sense that heaven has a duration)?

I think of heaven as a place for us to be who we are, once we have become who we are in this life and the Millennium. How long does it take a person to be who they are? We don't live our lives all at once. Sometimes we have contradictory traits, which can only be lived one at one time, one at another.

So perhaps the minimum duration of heaven is the time it takes to be each of our traits -- but, I think we would have to live them out to their fullest extent, like bringing a fruit to full ripeness.

Then, if some of us finished early, we would have to wait for others.

I think of each "duration of heaven", then, as being something perhaps very long, vaguely defined.