Transfer Questions

Hey guys! So I am also gathering info on transfer req. for unis (early bird catches the worm) so let’s say i’m interested to transfer from Aerospace engineering Florida tech to UMich, what classes should I take in my freshman year to maximize my chances and how far is it true that it is nearly impossible for a student in a uni in a certain state to transfer to another uni in a different state? Also how large is the transfer window for unis like UMich, Univ of southern cal and Georgia tech for engineering ? (is it always full). Any other suggestions will be great too. Thanks