Should I Make This Change to My Base?

So one of the times an MCX fleet got through, one very smart tactic that was used was (please see Pic 1) was to hang out in Position A, out of range of all but Halos 1 and 2, one of which would be already destroyed:

So I changed the path of my base, which will leave the fleet in full range of all but the two northernmost halos:

This approach is not without drawbacks however: the attacker's path is shorter. It prevents me from placing a turret to discourage rimming my northeastern flank. And it puts my shipyard in harm's way earlier than before.

So, the $64,000 question: Should I go with Pic 2 or revert back to the way it was before, Pic 1?