I need to edit 6 youtube videos

Hi, I have 6 product videos of the similar format on Youtube to be edited:

Scene 1: Supplier info (REMOVE) and replace with mine
Scene 2: Product Name (REMOVE)
Scene 3: Product in white background (MAINTAIN)
Scene 4: Product in multiple angle views (MAINTAIN)
Scene 5: Product in other colour options in white background (MAINTAIN), colour name to be removed.
Scene 6: Supplier info (REMOVE) and replace with mine

OTHER REQUIREMENTS:
1. Replace all logos appeared in the video into mine
2. Change the original tune with something similar

SOURCES:
https://www.youtube.com/watch?v=yAi5iUFMT-M
https://www.youtube.com/watch?v=GnMe_DR_jt0
https://www.youtube.com/watch?v=QFJ8qUcxxOA
https://www.youtube.com/watch?v=xFCFa93wkzM
https://www.youtube.com/watch?v=jk7Mujlz6s8
https://www.youtube.com/watch?v=u50X9qLmwAE

Thank you.