Glad to be able to help! Sure, I think it's a good idea to experiment with a higher FOV. Certainly when flying proximitiy/tight race tracks it can be helpful to get a more wide view.
Some benefits with using a smaller FOV is you see more detail in the center of the screen, the view will be less distorted (especially on a real quad), depth perception might be better (at least far away), and it gives more sense of speed.
But, all in all, what you want will depend on your flying style and personal preference.
(Also it can be worth noting for anyone reading this that Freerider uses vertical FOV measurement, so a 70 degree FOV will be around 125 degrees horizontal on a 16:9 monitor)