Suggested schedule for delivery:

Due to my supply: chain scheduling,
[ 37 different venders] as well as you're need for you to hire and train a sales force, this is my suggestion: 
One bus per day: Five days a week. That amounts to 1,000 units per week, that needs to be installed. At the same time, this  is a substantial load on your sales force and Ad Agencies to fill those monitor. 
Should you want a more aggressive schedule, I will oblige. 
Total time: This will take 20 weeks per 100 buses in your fleet. The  time of the rental agreement will start when the last bus is completed.