Hmmm... what about the Book of Kells? It’s got at least the gospels from the Vulgate, though I’m not sure what else it includes, and it dates from the 790s if I remember right.
It contains about 90% of the Gospel text and may date in part as early as 790, but likely after 800.
This newly discovered manuscript may be almost a hundred years older with much more of the text. From a scholar's perspective, the historical books of the Hebrew Bible and the Acts of the Apostles from the Greek Bible are particularly desirable, since ancient copies of these books are much harder to find than copies of the Torah or Gospels and they are much denser with textual variants.