I can provide you with excellent research results, and a "killer" script! I am currently in college (psychology student), but love doing research and writing!
I am allowing myself 30 days, but may finish much sooner. My reasoning is to allow plenty of time in case of emergencies, difficulties, etc., or simply to alow myself the time to perform complete research. I also proofread my work several times, and make corrections.
In the end you will receive a package to be proud of!