15 days is the right amount of time needed to work on a well rounded and structured edm track: intro, first drop, melodic big-room anthem, powerful build up, second (slightly different) drop, outro.
What's different here with respect to other offers? Originality. You like dvbbs-like sounds, but you don't wanna be their nth copy. You want massive tune and devastating drop, but you don't want the very same sounds / instruments / synth.
If this is what you're really looking for, I am the right ghost producer for you. On the contrary please contact someone else, I don't like producing copies of someone else's successes.
Regards,
TFS producer.