Welcome! Second on Dave's comment. Yes, it's scary the first time (read my signature story). Do several trips around home and test out the Low Battery Warning (LBW), VLBW, and eventually "Turtle" (but make sure you're on flat, local 25-35 mph roads and less than 0.5 mile from a charger). I still remember my first LBW (I was only a mile or so from home, but it was still scary). My first VLBW was arriving back in my garage after my trip to Bellingham.
You'll get more comfortable as you drive more. Unfortunately, you do need to plan a bit more for those longer trips. Plus you always need Plan A, B, C, D. Also, don't hesitate to bail out when something doesn't work out. Remember, to take extra time and don't expect to make it in exactly the time you plan. You can always pull into a hotel and spend the night on L1 (it's got to be better than a tow truck).
I've only done a handful of trips out of the Tri-Cities. I'm getting better at predicting and meeting schedules, but if you plan some extra time, then it's no big deal if you're a little slower than the plan. Just this week I went to Walla Walla, 130 mi RT. I planned to charge for 3 hr at the dealership while having dinner. It work out almost exactly as planned. I added an extra 15-20 min charge for padding, went to the symphony, and returned home at 11pm just after LBW. I adjusted my driving speed as needed to get me home with just enough buffer to feel comfortable. Due to the hour, I certainly didn't want to run out of juice. I still had another 10-15 mi until turtle (at 25-35 mph).
Weather is a big factor (especially wind over here). Being a bicyclist, I'm used to it and have dealt with it for decades. Until we have more infrastructure over here, I won't plan long trips during the winter months. I'm looking forward to some summer treking. Since we're in the midst of the spring hydro run off, drive all you want. Pretty much 100% hydro power right now and if we don't use it we'll just spill it.
