I changed the cabin air filter from ECS myself using a helpful YouTube video. Last time I was charged $35 for this, with dealers charging upwards of $85. It's not complicated, although getting it back in was a bear, mostly because of the last step, a felt cover with wing nuts that's poorly designed. Still, I would do it again for $35. It wasn't at all complicated.
I'll have the tires rotated in the next week before the trip. It looks like they'll be good for another 10,000 miles, if I'm lucky.
The coolant hasn't been changed. There is no service interval for coolant, and there's discussion if this means it's lifetime or not. Still, many get their coolant replaced around this time. Like the fuel filters I continually change, I'll be extra safe with the coolant as well. Parts are on order.
I haven't had any other problems since the coil pack incident at around 60K miles. On my to-do list is a paintless bodywork tune up for various dings.