I'm a bit confused with my status and deadlines to find a job. I'm currently within my H1B day #40 of grace period after my job loss. I also have Green Card EAD (that I got through employment EB1-b with 180 days been passed- still valid until 10 months, AoS interview in 2 months). 

So how much time do I have to find a job? I'm a bit confused. Is it 20 days (until the end of H1B), or 2 months (until my AoS interview)?

My assumption was that now that I have EAD, it means I'm like a GC holder; I am authorized to work and no specific deadline to find a job unless otherwise I-485 is denied or USCIS asks to do so. Please advise.