No, as lon as the schools are all accredited and have a good working relationship, it's just an extra hour or two of paperwork. you'll spend that much time finding the right line for registration at UM.

My working theory is this: start at your end school, and ask which schools they recommend for lower degrees and transfer credits. Then attend the school who's highest degree is the next one you'e shoooting for. WCC only offers associates, so you take the first two years there, then transfer to eastern which offers bachelors but fewer masters, then go to grad school at UM. Most schools give the most attention and class time to the highest degree they offer. Getting a BS at UM if you're going grad is silly. they grinnd people through there like a machine, and a very unpleasant one at that. Save your money, education is education. Your final degree will be from UM so you still get all the kudos.