I'm planning my first road trip for the 4th of July weekend and I need to know realistically how much wiggle room is enough. For example I'm using EV Trip Planner and my first leg is 176 miles 69.4 KWH using a 1.15 speed multiplier and 600 lbs (overestimating 4 people and some stuff). another leg is from the super charger to my destination and back to supercharger... of course I won't be able to charge while I'm there. That part uses 53 KWH not including driving around town. Are these reasonable amounts of wiggle room or am I going to be in trouble? I drive a 2015 85D. Thanks in advance for your feedback.