DRV lug nuts require 150#' TQ. You should have the plastic caps that have a plastic plug in it. Best is to remove the entire cap. Raise the RV so all the tires are off the ground. Slowly pump grease into the zerk and slowly rotate the tire and keep doing so until fresh grease comes out the front. There should be a supplement showing this in your manuals.
If you have white caps they are no doubt cracked or broken and should be replaced by DRV at no cost to you with ones of better quality.
I am going to MorRyde next month to have the 2" riser added. I may also trade the lower TriGlide jaw on my TrailAire air bag kingpin for another standard lower jaw. I need to lower the kingpin and raise the RV to get a level ride.
I run Alt ride height ALL the time and don't have anymore flashed lights than with another vehicle with bright lights. I run the fog lights at all times.