So I finished watching it, the interesting part starts at 1:12:12
His conclusion and his explanations seem logical to me, though I'm still unsure who caused the Israelites to be enslaved, what caused the famine (natural causes?) and who took over Egypt in the Hyksos period (or after it).
Also since you're no longer a Christian, do you consider the New (and Old) Testament to be an accurate historical account of events, in general?