Soooo, it looks like I'll be charging at 110V to start out. Oh geez do I need a dedicated outlet to do that?
A dedicated outlet is not required as long as you are careful not to overload the circuit, with the best advice being to not run anything else on that circuit while charging. The OEM EVSE uses about 12 amps, which could lull someone into thinking that this still leaves 3 amps on a 15 amp circuit, or 8 amps on a 20 amp circuit. However for continuous power draw the electrical code limits to 80% of rated, which is right at 12 amps on a 15 amp circuit, and 16 amps on a 20 amp circuit. Running something else briefly on the circuit even if it's over the 80% limit is probably okay but still best avoided if possible.
If you don't have a circuit map of your home you need to make one, it will come in handy for other future projects or DIY repairs also. It's the only way to know for sure what else is on the circuit, you can't rely on whatever they wrote on the panel. Plug in a lamp into all the outlets in the house one by one while someone else trips each circuit breaker. If you are by yourself you can plug a radio into the outlets at full volume and you should be able to hear it when it cuts off. For ceiling lights etc. you just turn them on and see which circuit turns them off.
Making a circuit map often reveals surprises, like things on the same circuit on opposite sides of the house. I was surprised to find out that my garage outlet is on the came circuit as all of the outdoor outlets all around the house as well as all of the outlets in the basement. And it's only a 15 amp circuit so I definitely have to pay close attention. However one advantage that I have is that I do 100% of my charging between 11:00pm and 7:00am because I am on a time of use plan, and I would almost never be using outdoor power or power in the basement during those hours. However I do have a dehumidifier in the basement so I have that on a timer so that the dehumidifier does not operate during my charging hours.
Another problem people can run into is charging at relatives or friends house, because it is unlikely that the friend or relative knows for sure what else is on the outlet that they are willing to let you use. Better to be safe and just avoid that, but if it's for example a relative that you visit often then you can always volunteer to make a circuit map of their house for them.