To me the important parts of the game are;

1. driving

2. short irons/short game.

You need to be able to hit the fairways. Once you can do this, on most holes you then only need 7 iron or below to hit the greens. For the majority of par 3s 7 iron or below will suffice.

Simple approach to the game;

- Learn to drive
- Practice your 150 yd shot

If can do these 2 things consistently well your scores will fall dramatically.