Transferring into Isenberg

Hello
I will be attending UMass in the fall as a political science major. Recently, I have been having second thoughts on this major and have been thinking about going into either finance or accounting. How difficult is it to transfer into Isenburg say, at the end of Freshman year (or should I consider doing it at the end of my first semester). Also, if I get rejected can I reapply later? p.s. I’m in the honors college

Thanks!

Average GPA to transfer in is a 3.7