i would most probably just sell all my bitcoins in order to make some easy profit out of it
That's also the plan of the rest of us. everyone must have cashout before you just before bitcoin's value goes 1 million. My plan would just be to buy some altcoin instead. altcoins that has potential to grow big in the future.
I will not convert my bitcoin into fiat when the price is high. I will just use the bitcoin direclty. That will increase the price again.