HI, I am a 85D MS owner form 2015, finally decided to give it to my Mom and ordered MX 100D, mostly because I intend on sometimes towing a camper close to the max 4,000-5,000 lbs. and finally have a bike/snowboard rack. I m truing to decide between 75D and 100D (have 1 day left to change) as the price difference is way too much off: at around $660 per kWh ($16,500 / 25kwh) where's for example the power wall is sold at about $420 per kWh (so I am better off stacking a couple of PW's, so to speak). 1. What can one expect in range reduction when towing close to 5,000 lbs on flat surface between 60-65 mph speeds? 2. Are there other advantages for 100D that I am not seeing, other then the 0.2 second speed increase, which is a basically none? 3. Does anyone know if upgrading to 100D could be possible in the future if I bought 75D? 4. Why is Tesla selling car battery for so much more per kWh as compared to the PW? Any other notes are appreciated, $111K is a bit of a stretch for me, especially that I am not getting any $ for my MS.