Hmm, all those YOs…I would definitely consider joining after row 2 though, before you start all those YO at the end of rows.
If I couldn’t join after row 2, I would skootch all my stitches over by 1 from row 3 til I joined, meaning, for row 3, I would K1, yo, K2, yo, repeat to to second to last st and end with a K1; for row 5 I would K2, yo, K3, yo repeat to to second to last st and end with a K1. This keeps the pattern in line by removing 1 knit st from the beginning of the row and adding it to the end - not only will it “enclose” that last YO, but it will be easier to join when you go to seam up those first few rows, and it won’t make any difference once they are joined in the round (you can always move your marker over by one to mark the start of the round once you’ve joined). Remember to do your even rows in purl if you are going back and forth!
I would also think about starting on circs (interchangeables), if I were doing the skootch method - I would use a capped cable on each needle for my back and forth knitting, then when it got long enough I’d join the needles with one cable, join the round together and then continue knitting, now in the round. Then there’s no transferring of stitches to other needles (although not such a big deal if you just knit right onto the new needle).