Commuting is cancer and while the 175 is a great plane, most who have flown the 145 loved it as well. If MIA is your long term goal, don’t be silly and just take the 145. It will make upgrade training so much easier.
Best advice I was given just prior to coming into this business was “pick the base and NEVER chase a specific plane”. After a couple hundred hours a plane is a plane is a plane.