Just a follow up to my original post. I had a nice conversation with a Mooney instructor yesterday and he suggested I finish my training in the rental 172 and even do IFR in it. He said after that he would transition to the complex. He also mentioned some pilots feel more comfortable flying a fixed gear slower airplane for a few years on trips in order to get the feel for cross countries, atc, different airports, etc. prior to transitioning to a faster more complex airplane. He offered to train me once I completed my PPL but those were his thoughts.
I really don't like the 172 or the high wing in general for some reason. Also trying to get the hours on the rental can be a pain with my schedule and my instructor's schedule. Thanks for all of the input from the group here.