My last opine on it is simply "what works/flows the best, editing wise?" It doesn't HAVE to be the Executor, as this is a fan edit.

Now I understand Ady.. this is your edit, so all opinions aside it comes down to what you are comfortable with. I'm just saying that you don't have to be a slave to anything prior to this edit if you like it being the regular SD we see in the next shot.

As for myself, it just makes visual sense that we follow the back of the tower to the SD we see in the next shot (per Jaitea's response: to show just how huge a regular SD is, and THEN to see something even bigger creating a shadow over what we've already seen to be pretty big..) and then progress to the Executor, which moves from shadow to underbelly to full profile.

EDIT: it looks like .MAC. made the same point.

Regardless, I think it is important that the alternate clips that you have provided are saved and archived for alternative edits, be it from yourself or others.