Thanks for the comments Manetho, and Kish. I enjoy the push back for sure. Eager still to see how this works out in the end. I might get to change my mind.
On Romans 1:3. This is Paul's solid effort to fulfill Old Testament prophesy, it appears. In the gospels Joseph is said to be from the line of David. But Jesus is not biologically from Joseph. So it's kind of confusing. Anyway, the word, as stated in the KJV is "made" again. Its almost as if, on a mythicist position, the seed of David was used to make the mortal body that Jesus inhabited. I always think it funny to think the ancients could really track, at least with much accuracy, lineages over the course of hundreds or thousands of years (I mean, even in our modern day, the Church with it's familysearch arm, can't really take seriously anything before 14 or 1500. Its all just kind of a mess or wash before that time. And the only reason to go to that era is there are records, at least, somewhat available). Since it's hard to take it seriously, I'm not sure they treated it any more than in a mythical sense anyway. How would Paul know, for instance, Jesus, if he lived, was a real direct descendant of David? Sounds like, as suggested, he was aware of Old Testament prophesy and made the fit to fulfill it.
Concerning his Son Jesus Christ our Lord, which was made of the seed of David according to the flesh;
With that all said, it is true that there are a couple of allusions in Paul that fight against mythicism. Even though each is explainable in some way, we can safely say that some of these point towards historicity on their own. But such readings for historicity also fights all the descriptions and explanations of mythicism. yet to come.
“Every one of us is, in the cosmic perspective, precious. If a human disagrees with you, let him live. In a hundred billion galaxies, you will not find another.”
― Carl Sagan, Cosmos