I did the 95mph Switchback seasonal challenge with my own setup. The main thing to keep in mind is to tune for the goal of the challenge and don't get hang up on other aspects. So focus is to maintain an average of 95mph speed while cornering through a tight corner. That means some areas you want to hit over 100 and then have the best possible handling and acceleration back to 95 plus miles per hour when setting up the car.
At this time, Maxthegamer has 66,837 views for Forza Horizon 5 spread across 32 videos. His channel currently has around 3 hours worth of content for Forza Horizon 5, roughly 1.37% of the content that Maxthegamer has uploaded to YouTube.