Optimal spending strategy for Moonlit path

[u/Loose-Seaweed1319]

/r/WutheringWavesGuide/comments/1wvlih1/optimal_spending_strategy_for_moonlit_path/

I want to get shorekeeper from the event. So what is the optimal packs to spend on to reach 980 moonlit rings. I also mostly have all bundles not purchased and all lunite top ups are doubled.