While the OT may help with New Kingdom dates, the rest is a total mess which cannot be resolved until Egypt grants open access to many sites now closed, allows dating samples to be taken out of country, and our current crop of Egyptologists take a serious look at sites which no one has looked at since the late 19th and early 20th Centuries.
Then again this could well be a circular argument as much of what is considered New Kingdom and our understanding of Pharonic succession might depend on who did what to whom when in the Archaic and early Old Egyptian Kingdom.
Quite right, the OT starts with the Middle Kingdom.
The biggest problem is a xenophobic nationalism that has led to substandard conservation and research done by Egyptians, some of the trained only in Egypt. It has also led to ludicrous claims, like Egypt has been a unified country for 5000 years (a whopping lie) or that there was no slavery.