Thanks everyone for the tips.
Leaning towards taking an Uber/Lyft to the starting line, which brings up another question. Site says you must get dropped off by 6:45 am. Is this just another exaggerated NYRR time? I’m going to assume it is. I’m in the first wave, so if I could plan to get there around 8-830 as advised, that’d be ideal.
What they mean by clearing SIE is the area leading to/from the Verrazano Narrows Bridge. The Bayonne Bridge remains open throughout the day and it is the way you will want to head into SI. You want to be dropped off on McClean Avenue, over by Lily Pond Ave. There is a back entrance there that is a LOT BETTER than the main entrance used by most runners / participants. This is the designated area for law enforcement, volunteers, but also runners.
This is a Google Maps link to show you where to get dropped off.https://goo.gl/maps/pd2BHU7SXCJ2
And, this is the route I follow every year:https://goo.gl/maps/bH9mTaTTE7u
You will notice that the linked routed above gets off at the exit for Clove Rd. Normally, they make you get off there, or the one after. Don't worry, there is very little traffic in the morning, and you will notice other people doing the same thing and following pretty much the same route. But, definitely head for the intersection of McClean and Lily Pond. There is very little people using that entrance, so clearing security is a matter of seconds and you will be stress free.
It really is the best way to get there.