Heres my take on this.. I believe God set a standard for the king for the people of Israel. .. When He said that the king not be a foreignor I believe is because foreign kings would not have the best interest of his people.. Just as he would not if he was interested in wealth and anything to do with worldly gains...suggesting a man that would be humble and loving of His people. Having their best interest at heart.. Sending the people to Egypt would be tatamount to sending them back into danger which is why the Lord said do not turn back that way again.. It was a warning. We also have Gods requirement that the King be righteous... reading the law so that it was ingrained in him and not to put anything in his path that would cause him to stray.. the wives the horses.. the gold and silver. Theres a prophecy in this that I can see.. Thats a promise of God if Israel obeys Him in their selection of King. I hope to see all the promises of God as we continue this project.