I don't even think all those check marks are really necessary. Just make it a "save and proceed/exit" type button and you're good to go. save file sizes are tiny and it would just overwrite the last exit save that you can then load by pressing the "continue" button in the main menu. No back and forth or special tech necessary. If you want to load a different (manual or auto) save just select the "load game" option. That's how all games should just do it.