You've already got the basics but I would suggest reading a lot of different threads in this forum. You will get a great insight into what problems folks have had and what fixes have been. Then be proactive in heading off those common problems we all have had.
As far as a list goes, everybody's lists are personal and based on past experiences and personal mechanical ability comfort levels. Don't get yourself into the mindset of "what if that thing or that other thing goes bad ?" You may find yourself carrying a parts store in your basement. Remember, you still have your truck and can always drive to the parts store.
Now boondocking is a whole different animal. I do not boondock but if I did, I'd probably have a "spare" RV with me.
