Version 3
This set of starter saves completes as much of the side missions as possible without starting any of the story missions; therefore, if you had never played the game, the only thing you'd need to do is watch the introduction of a new game to catch up with where the starter save is at in the story.
As it so happens, 44% of the non-story side missions are accessible without starting the story mission, and all of those are completed in these files along with a number of cars loaded in garages and items I happened to pick up along the way.
This leaves only a few missions which are not completed
1. Story missions needed to complete the story.
2. Asset Missions
3. Helicopter Checkout Missions
4. One jump which can be completed during the G-Spotlight route