Right now i just can say 10 maybe enough for me.
But, i don't know after i convert that BTC into Real money maybe isn't enough anymore?
"There's never enough money, anything you plan always goes wrong- it's just hard to be human, isn't it?"
BTW, My plan just chill everyday and travel around the world without worrying about bills.
Your plan sounds very good, I like it!

I agree with you that there's never enough money. The problem is that these 10 btc may no longer have the same value in the future as they do now. This is life, you never know what will happen tomorrow. So it's kinda difficult for me to say how many bitcoins I need to support my life. I'm living in the moment.