I am assuming from the get go anything they put together will be a shi+ show as such thinking only working the LYFT HG or the streets nearby. I got offered $50 per hr so no brainer how much they screw up just do that.
I've worked in Miramar for years and there is no easy way in or out. For the show they open all three gates and the one off Kearny villa road is your best bet as you can access it from the 15, the 163, the 52 and even Clairemont mesa blvd.
I'd avoid Miramar if you can as the main gate gets thick from folks from north county coming down the 15 and getting stuck in the light cycles of the first 4 sets of lights.