Week Long Car Trip to Dwarka, Need suggestions.

Hello,

I am planning a 07 day trip from Mumbai to Dwarka and back along with my father (67yr) and my wife and 1 yr kid. I own a Safari Dicor 2012. This is my first long trip with family. I will be driving 6-7 hr daily (around 400km). Please provide suggestions wrt to the following queries:

1. As my father is old, would you suggest a car massager seat and if yes, which one should I buy? He also had an acident where he broke 02 of his lumbar vertebrae. I want the journey to be as comfortable as possible for him.
2. wife and kid will be travelling in the middle seat. What all stuff can I add for comfort and safety??
3. Must have car trip stuff?? I have purchased an air compressor, some extra rechargeable lights, jumper cable.