LB: I think you are missing the main point and the context of this scripture passage written by Paul.
Regardless of the precision or the version/translation of scripture you have found for what you consider a key word regarding the Son’s pre-existence, in translating from Greek to English, Paul is not referring to Genesis at all here and thus Paul is not speaking of the Son of God preexisting before his natural birth as a human being.
You are mistaken. Why would Paul suddenly insert your Genesis theme into the topic of the Son of God’s preeminence over all creation, surpassing all other created beings made by his Father? He is speaking about other creatures like angels and human beings only! And Paul definitely not speaking of being preeminent over rocks and planets either of course.
The important point is understanding that being the firstborn of 'pas' or 'all' creation is limited to the new creation established by the Son of God at his resurrection and ascension after Pentecost, for the new believers, the Body of Christ or the infant church. This is what Paul is addressing here, not some imaginative idea of the Son as the creator of the universe and earth, which God the Father accomplished long ago. Also, why would Paul mention both IN heaven and ON earth as if retelling the Genesis account? Paul is describing God working through his Son, as he did on the Cross, to establish and gather new members of his Body, including angels, IN heaven and ON earth.
Just saying... this changes everything, doesn’t it? So, consider again: Is Paul talking about the original Genesis here, or the new 'Genesis' of believers and new thrones, dominions, rulers, and authorities under his command to build the Kingdom since the 1st century AD?
And if Paul is speaking of the church and more here over the original Genesis account, this certainly does not establish any pre-existence of Yeshua now does it.
And in verse 17, Yeshua does not hold the planets and Universe together and is some how before (pre-existed) all these physical things. That would be rather silly. He is before in authority and statue to all he holds and bonds together in himself since his ascension and today, at least his growing Body of believers and its structure.