Rohl’s chronology is very controversial and not accepted by most scholars. Kenneth Kitchen, perhaps the leading scholar on Ramesses II and the New Kingdom, does not accept Rohl’s chronology.
Kitchen has a lot at stake - a lifelong pursuit of Egyptology. Perhaps his eyes are being a little clouded by convention.
Rohl’s chronology is worth looking at. There are big issues in the Chronology and his view seems to answer many of them.