There are no "bare minimum" practices to be learned in Dzogchen. Its not that you get DI once, and then you become a realized Dzogchenpa. You need to become familiar with the Natural State by becoming introduced to it again and again, while at the same time purifying your karma and yes, working with your circumstance. I think you will be missing out on much if you plan on getting DI and then throwing the world away on your wandering yogi trip. Dzogchen is not a lifestyle, its not like your going on tour with the Dead or anything. Maybe it would be wise to put more stability in your life. That way your practice can be grounded with a strong foundation. I mean, how is it going to help your practice if you just end up on the street or in jail. I am sorry if I sound condescending, but like I said this is not ancient India where the homeless yogi had ample support and respect from society. Its just not like that anymore. If your serious about dzogchen, your lifestlye should support practice. And believe me, I've been homeless, I've wandered and bummed my way all across the country and back many times, and I don't see how that lifestyle can be of any support to your practice or realization. OK, thats enough from me. I am speaking from experience, though. Plant some roots, get grounded, get a teacher, and practice as much as possible.
I guess just some peronal retreats into the park will be better than what i planned to do, see if no-one would have said nothing iin a few months i would have just left.