ABRP shows[0] plenty of Superchargers along the route and a suggests only a total of 50 minutes of charging which are nicely spaced for eating and breaks, although I'd probably add a buffer in there as well.
Round trip[1] has more stops, obviously, but easily doable without any more planning than getting in the car and driving.
The i4 is a cool looking car, but maybe you could rent a Tesla from Hertz (the devil) or something like Turo and give it a try?
The i4 can get there, but the last leg is a long one, and you have only one L2 charger for the whole town when you arrive…we’ll, it’s 60kw or so, it might work.
There are nearly as many Supercharger locations along this route as there are in my entire state (more if you drive back through Portland[0]), and I live in a state with an area comparable to Washington.