I always play my first save as Man United, because I know I will never be able to just choose any team and win without gauging the new engine, finding out the tactical things with a team that can pull results even if you send them out with poor tactics.
This FM is a little harder, Team talks are impossible in your first team, half the time my United team switches off during them. There is a bit more difficulty overall which is nice and perhaps you underestimated this going in, for me in FM 2012 I won the EPL within 4 games of the end of the season, this time I required Spurs to lose and me winning on the last day to secure it.
My advice would be perhaps choosing a stronger team just to judge the way the game runs, I consider myself good at FM but would never attempt a save you're doing without seeing the game engine run first, that would be an exercise in frustration (for me at least)