The speed limit in that area is 60 mph, however no one except a few ever drive it that slow, pretty much a race track in that area.
If you install the Moto lights, be careful on use if you also run passing lamps, They draw a large amount of current, and will kill your battery quickly. I just replaced the 35 watt halogens with mR-16 led's from custom dynamics. They are bright and very little voltage drop.