if you dont have the time to learn about synths, go for a sample library like omnisphere 2, Korg M1...
I recommend you to experiment, experiment a lot until you get that sound, trust me its the best way to understand how synths work, go for spire,...
You will never be sued for copying an arrangement structure.
song has a complete different vibe and feel, different key, different chords, different melody.
I made strings with Kontakt library
Man Tutorial Samples are completely royalty free. And I only used the same vocal samples, all drums are mine as well as all instruments.
Transposed them to a A major and worked them out with melodyne.
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