If I remember correctly, one of the reasons you weren't getting goals last season was because your strikers weren't that good, but you've definitely improved them over the summer.
Radan is probably one of the best strikers in League 2 (in fact... he'd get into my team at the moment), and Obosian is much better than your second choice striker last year. Train him in long shots, and you'll be ok! You might also want to train a few midfielders as playmakers, to increase the number of chances your strikers get.
As for your defence, I agree with Stephen - there's nothing wrong with Zahed - it was just a bit unlucky. Correct/man marker might be useful skills to have, but he's good enough for League 2. You'll probably want to improve the rest of your defenders to be at least 9.5 stars though. Some of them will get better as they get older, but you might need to replace one or two.
Hope at least some of this is useful!