In my experiences throughout 45 years all of those components work. The following measurements are made in right ascension, that is true body positions from 0° Aries in space.
The Tropical rendition of a mundane chart for the 8.0 earthquake in Peru, the progressed Caplunar (chart for the entrance of the Moon into Sidereal Capricorn) - a type of chart I have used for almost 45 years. It's MC is at 321°56'. The progressed Caplunar's midpoints of Saturn/Neptune at 320°45' and Neptune/Pluto at 322°20 are on the MC. The August 11, 2018 partial solar eclipse at 141°30' is on the IC.
Not related to the midpoint question but perhaps of interest - the total lunar eclipse of January 21, 2019, also indicates possible notable events at the longitude of the epicenter of the earthquake..