To create 4.5 mins promotional video with voice over

In order to introduce potential members to our new club, we need a 4.5 promotional video.

Required: Collect relevant clips from available videos, add voice over (we provide the text), and create a video with soft background music to introduce the new club, benefits, and encourage members to contact us. If the quality is good, we would like to have a long term continued working relationship to create future videos of upcoming events & marketing material.
Sample: https://www.youtube.com/watch?v=mVsHzfWyqCQ
Payment: As we have not used your services before, Pls amend payment term to 25% deposit upon agreement, then 50% on delivering the first completed draft for review, then the final 25% once the final changes are made..