Your bracket composition depends on size of your pool. If your pool is on the smaller end (50 or less entries) then it should be a fairly chalky bracket with a few measure upsets. No need to take major chances. With larger pools, you should be taking more upsets but still no need to be reckless. Mimicking the general public with picks will likely not end up different enough to win a pool. At the same time, picking multiple outliers to reach the Final 4 is likely not to pay off.
Note: These are just baseline brackets if you want some sense as to the strategy of each. This is supposed to be a fun event and you should be able to pick whomever you want to root for. Feel free to start with these brackets and make changes as you see fit.
Summary:
Summary: