Your plan is great. Although slower than President Trump’s moving them to an Indonesian island. Then guard the hell out of it do the fakestinians can never ever attack terrorize slaughter bomb or torture anybody ever again.
I’d also suggest punching a damned hole in the Egyptian barricade wall sbd telling the Egyptian ruler to at least allow free transit so that any fakestiinuans wishing to go to another Moslem country can do so. (Keep them the H out of USA!!)
No country wants the Palestinians. Definitely not the Jordanians nor the Egyptians, considering the chaos Palestinians have caused to Jordan and Egypt in the past (Jordan had accepted many refugees decades back, who tried to assassinate the king) and recent past (Egypt has banned the Muslim Brotherhood and built a huge wall to prevent more Palestinians from coming in). Existential threats to their political stability. In the past they have even caused issues in Syria and Lebanon.
There is absolutely no way Egypt would let a couple million of such people go there as refugees (or even worse) integrate into the local population. Even if someone blew a hole in the Egyptian wal (not sure though why that would be right …it would be like someone blowing a hole in the Trump wall so that Mexicans can go to better places) …anyways, even if someone ‘blew a hole’ in the wall, Egypt would never accept them. They’d be accepting chaos and massive/existential disruption if they did, so they will not.
It is a tricky problem without easy solutions. No place on earth would want to receive them.