If I had to choose, I'd probably go for the 5.00 CGPA. Education seems like the safer bet for long-term success.
I think 5 btc is an opportunity that you may not found again but as for education it is something that can be obtain at anytime. This not even time to rush into school because education is now expensive . Money rules the world and 5 btc is a reasonable amount of money to give someone everything in the world. What 5 btc can give you 5 CGPA won't be able to give. 5 btc is a Great opportunity to become wealthy that one don't need to miss it.