Together, we are the United Nations
Gunulfr ok Øgotr ok Aslakr ok Rolfr resþu sten þænsi æftir Ful, felaga sin, ær warþ ... døþr, þa kunungar barþusk.
If I have 3 units in port said and reinforcment card that doubles as move, can I place them there and move all of them before overstack takes place?
I would say yes. 7.532 states you must place the reinforcements in Port Said, and 8.2 states that you have until end of movement to remedy the overstack.