This can be a good step but its also pretty risky if you are asking me, I would of course try it but most likely it will be something that can be really tricky.
I think that the bitcoin is nice but you should wait on a better time if you really want to do this.
Yeah why need to sell all the stocks and buy bitcoins. Just do investment and business with your stocks then you can able to earn money from that right. So utilise that make bitcoin purchase with that and hold for long years.