I agree that you really have to make the decision for yourself. Both disciplines have merits for sure. In my opinion, pattern helps you be a better IMAC pilot. Some of the greatest IMAC guys I know started in pattern aka Rick Byrd, Andrew Jesky, etc. I am not advocating that the only way to be a good IMAC pilot is to fly pattern but I do believe that pattern gives you the fundamental skills to be a great IMAC pilot.
There's a saying I heard not too long ago...."If you want to be a great pilot, fly pattern. If you want the limelight, fly IMAC". I'm not so sure I agree with that 100% but the first part of the statement rings true for me. Pattern teaches you how to fly the plane so the plane does not fly you. It takes a set of skills to fly at the upper levels of IMAC that are certainly taught through every stage of pattern. Pattern takes dedication and pattern is rather boring to watch if you don't understand what the pilot is trying to achieve. When you do understand, you will develop a deep appreciation for those that do it. IMAC is incredible to watch and can be just as demanding. I say try out each and take it from there. I do believe that, in order to be successful on a regular basis in either discipline, that you have to eventually choose which facet to fly.
That's my story and I'm stickin to it.