How is the drive from Arusha to Nairobi Wilson Airport and how long will it take? Is border crossing and general safety ok? Are roads paved? We have an option to take a Precision Air flight at 9:00a.m. and then transfer from Nairobi International Airport to Wilson where we need to catch a 1:15 p.m. flight. We are being advised to drive as the time involved would be similar and Precision air apparently is not the most reliable. We would be using Riverside for driver and car. Would love to have your thoughts. Thanks so much.