Looking at assist:
—1A and 1B need to be done to match the single Davis 2C course;
—1C fulfills Davis 2A course;
—1C completes the missing course (of three) to fulfill Davis 2B course
So I would get 1A done in spring. Then all you’re missing is the equivalent of Davis 2A, which you can take there.
You could also list 1C for summer 2019 (if offered) and then ask after acceptance can do it at Davis.