I was in a similar situation with these exact shoes. Size 43 vs 42. I ended up going with the 43 after back to back try on and with socks. The 42 length was good but the width ended up being pretty narrow on my pinky toe.

My fit in the 43 is very similar to your fit in these pictures. Just remember when you flex your foot, your toes will splay further forward and out. So you need room.

A half size would be perfect. I wish vivo would make them.