If you can multiply your funds 8x from the beginning with 100% guarantees, why you need to sell your strategy
Edit :
Buy and sell Bitcoin with Paypal is very risky since Paypal is reversible, it's going worst after you wrote this
If you do not see the higher rate offers when selling your BTC then make sure you turn off the filter for "Trusted Offers Only"
I'm pretty sure you'll get scammed after doing this method