General Maintenance of 5th wheel?

[Izzy1313]

Hi All! Still a newbie and about to take off on my first trip with my family across the country here 1.5 months. We have a 40 ft 3855BR, and will be traveling westwards from TN (Basecamp) to CA. Its is still fairly new as it was purchased in August. We moved in full time to adjust to the lifestyle back in October. No real issues, and I have only taking it out 3-4 times to practice driving and for fixes at the dealership.

My question is if there is any maintenance that I need to do before traveling it across the country. Thoughts on 50 pt inspection, repacking of bearings (although it really hasn't moved in the 5 months) re-sealing the entire 5th wheel? I am unsure and still a little ignorant to this topic specifically, and don't want to just spend money if I don't need too, or overlook a maintenance issue.

Any thoughts and/or recommendations would be greatly appreciated!