Summer Plans

So I have this half-cocked plan for the summer, which involves selling my car, saving up a bunch of money, then quitting my job and taking some months to
a) volunteer lots and lots,
b) ride my bike lots and lots
c) have the time to pursue and educate myself about new interests which include, ecology restoration, urban/organic farming, and starting/running non-profit organizations.

I'm pretty confident and excited about this. I'm don't have a specific plan for what I'll do with my time when I don't have a job, but I currently have so many interests and organizations to work with that I'm really expecting to be almost as busy this summer as I am now, and at the same time, less stressed and enjoying my life more.
I am operating on the assumption that out of this "project" a specific path will emerge and result in a paying job (hopefully before my savings run-out, but I do have some backup plans for that). The only logistical problem that really worries me is not having health insurance for an indefinite amount of time.

Outside of that, my father is going to flip his shit when he finds out what I'm doing. And I'm not sure what to do about this. I don't know why, but my dad's incredible cynicism and general lack of support in anything outside of the mainstream job/career plan really gets me down and saps all of my confidence when I have plans like this. I feel like I have two options with this:
I could try to engage him in debate, and convince him at least that I least I'm not about to make myself destitute. I have some specific arguments. I really feel like engaging in this debate will just make me upset and discouraged though.
My other option is to avoid seeing or talking to him for an extended period of time, and I feel like this would be the best option. This seems like a very difficult decision to make though. On some level, I really want my dad's input and support, but I just don't think that's going to happen.

Oh well. ONWARD.
(my dad and co-workers are blocked from this post)

(cross-posted on facebook with lots of discussion)