Mass Effect 3/Hunger Games crossover help

I'm planning to write a short five chapter crossover with the game Mass Effect 3 and the Hunger Games. I think I have a good point in the game to start the story. I was thinking before the truce between the Krogen and Turians is formed in ME3. But I don't know which Hunger Games I should go with: The 74th or the 75th Hunger Games. Which would make for a better Hunger Games for a story about Commander Shepard arriving on a colony named Panem, to stop his enemies from aiding President Snow?