More progress on Mega Exelion today!
The groundwork for the first set of warp nacelles is underway. The framework of the cutaway opening for the back dorsal section is done too.

also ship length is extended to 360 meters due to me double-checking the stats on the exelion and realizing its actually 7205 meters long, so that allowed me to appropriately have an additional 10 meters of space in the back for extending the warp nacelles.