So why is Jesus called the firstborn over all creation? Because he was the first thing created? No. Because he is pre-eminent over all creation
First, using the translations that say "over" rather than "of" doesn't let the Trinity off the hook, because nearly every version renders Rev 3:14 to indicate Jesus is the "beginning of the creation of God" or words to that effect. Sure, there are mental gymnastics and "debates about words" on this subject too, but if you have stop every few minutes and explain away what the Bible says, maybe it's time to rethink the theory rather than the Bible. This argument is nothing new and only addresses the "firstborn" aspect of that phrase. Even if it means "preeminent", it doesn't deny he is "of creation". You can read all about Jesus' creation in Prov 8.
Jesus is the "last Adam". If you feel that Adam is equal to - part of, an incarnate version of, whatever your particular take is - God, then you might be able to weasel out a case for Jesus to be, too.
Ridicule is the only weapon which can be used against unintelligible propositions. Ideas must be distinct before reason can act upon them; and no man ever had a distinct idea of the trinity. It is the mere Abracadabra of the mountebanks calling themselves the priests of Jesus. - Thomas Jefferson