I have a 2018 Nissan Titan Pro 4X4 with tow package. I have a 24 foot boat and a 29 foot RV trailer. The boat weighs approximately 5 to 6,000 lbs depending on what we are doing and the RV trailer weighs about 5,500 lbs empty and approximately 6 to 7,000 lbs during also depending where we are going. My question is, do I need to use the tow package feature for towing the boat and RV. I feel the boat is light enough that I can tow it on regular mode but use the tow feature for the RV. Your thoughts please.