What would like to handle, a seasoned team, a mixed of greenhorn with potentials and seasoned individual or just plain greenhorn with potentials?

Every case of the three cases you mentioned has its pros and cons .

Generally, ,y preference would be the second (mixed) case being the richest,  most challenging, and promising case.  I call them top-guns and oracles of the team ... and the trick to be where/when to place who and for what task/accomplishement  ... Mistakes in this process could be deadly, but success would be outstanding !!Another factor in my choice would be the task/challenge that the team would handle, the achievement expected from the team, and the time frame in which this team is to deliver the expected achievements.