Level 2 chargers seem to be the better option as level one takes a long time to complete. Audi provided a charging brick that allows you to use either by swapping the plug end over to either. I got a NEMA 14-50 plug installed in the garage and use Level 2 for my charging needs. Keep it between 3-80%, if I go below that, there is a setting in the App that let's it charge to 25% for emergency use while leaving the normal charge process for the 11PM-5AM, Super Off Peak hours, in my area.
I think all manufacturers are saying up to 80% charge for daily use and higher if you need it. For most long distance trips, there will charging points along the way and they are setup that you are not draining to 10% to get to the next one. However, depending on the speed yo are driving, you could do that on your own. After my 1st time or almost running out of juice (had to pull over because the car would not go faster than 25mph on 70mph 2 lane road and get towed to a charging point), I no longer try to skip a charge point and make it on what I have as one can't always account for hills and how deeply it will drain your charge. Electrify America charge points are about 120-150 miles apart on highways, I would go up to 90 or 95% if there are hills involved because I'm not driving the posted 70mph but more like 80-90 in this area. As more charge points come online for long distance trips, that worry will be a thing of the past.
For daily commute under 35 miles, the EV6 will be fine for a few days before needing a charge. If your commute is on local roads, it could be even longer as your range will increase on lower speed drives.
