Valley of Lemuel and River of Laman

I was recently made aware of these two videos about a potential location for the river Lehi named Laman and the valley he named Lemuel.

I like these videos. I like the suggested location for the valley of Lemuel, but I have issue with this concept:
In the first video he states, 1:40, "we know that Lehi fled Jerusalem and traveled south to the borders of the Red Sea; and then from this point traveled 3 days further south to the valley of Lemuel." Then he states, 5:30, "the distance between here and here, was about a 2 weeks journey, about 250 miles." Then again, 6:18, "after they came to the borders of the Red Sea, the text says that they traveled three more days south until they came to a place... that Lehi called Lemuel." Both videos suggest the same concept that after traveling to the borders of the Red Sea the family further traveled three days into the wilderness.

In the Book of Mormon it says, "He taketh three days’ journey into the wilderness with his family;" not, 'He taketh two week's journey into the wilderness with his family.' I haven't studied the geography of that region much but the text doesn't easily support the idea that the valley of Lemuel is two weeks and three days away.

1 Nephi 2:4-10 can be read the way that they interpret it in the videos, and that would make the story more dramatic than the way I read it; but the way I read it has more textual support.

Throughout the Book of Mormon there are several uses of what I call the 'summary comes before the details,' where they summarize a longer event briefly and then go back chronologically to the starting point to give the details of what happened.

One of the most obvious examples of this is with Abinadi in Mosiah 17:13-20 where in verse 13 he dies but in verse 14 he's alive again until verse 20. This is possibly the only obvious 'summary comes before the details' because, one, you can't die and then prophesy without coming back to life, and it didn't say that happened; and two, it states, 'when the flames began to scorch him' in verse 14, suggesting that there is a chronological shift, back in time, to just before his death.

I'm suggesting that 1 Nephi 2:5 is a summary of what happens from verse 6 down through the end of 1 Nephi 16 not just to 1 Nephi 16:9. I'm also suggesting that the valley and river suggested in the video are way too far south to be the actual valley and river that they stayed near during that first period, if they traveled on foot. What we don't know is if the three day journey was on foot or some faster method. The valley suggested in the video is a three day journey from Jerusalem if they were traveling by camel. We do know that Lehi was rich enough to be able to afford a faster method but no textual support one way or the other. However, I like his comment in the first video about tents, 3:25, "the Book of Mormon says that they brought their tents. Bedouin tents were really heavy so you would need camels to carry it."

The other statement supporting the three days rather than two weeks journey is the quote I referenced above which, in context states, "The Lord warns Lehi to depart out of the land of Jerusalem, because he prophesieth unto the people concerning their iniquity and they seek to destroy his life. He taketh three days’ journey into the wilderness with his family. Nephi taketh his brethren and returneth to the land of Jerusalem after the record of the Jews. The account of their sufferings. They take the daughters of Ishmael to wife. They take their families and depart into the wilderness." This clearly states that they traveled three days and then, after the marriages, they continue on.

I agree with the assessment that they were further up steam because of the phrase in verse 9, "And when my father saw that the waters of the river emptied into the fountain of the Red Sea, he spake unto Laman." This suggests that Lehi didn't know right away that the river emptied into the Red Sea.

I believe that there are two possibilities here. Either they traveled on foot and the valley and river are much further north, which doesn't yet have a suggested geographical location; or this is in fact the valley and they traveled by camel thus taking three days to get to this suggested valley of Wadi Tayyib al-Ism. I think the second is more likely.