Hi Evan, you don't mention which car you have - 60 or 85 kWh Pack. You also don't mention if there are no Places to charge along the way, or even slightly out of the way between you and them - as seen via
PlugShare - EV Charging Station Map - Find the nearest location to charge your electric car! - which would eliminate a lot of this fussing with crazy adapters! Obviously - doing a 'Range' Charge would be of prime importance with either car pack!
Using PlugShare - and you home town - I zoomed in to your spot - and then back out - so see the area: There are a few directions out from Nixa that have L2 Chargers - like Springfield, Table Rock Lake, Joplin, Lamar, Rolla, Osage Beach, etc. that could be selected along which ever way you are traveling, and give you the extra bit you need, so you can just use a simple 120V connector without all this fuss!