Modify small go code and add features

Hello, I'm planning on leaving a Raspberry Pi or a small pc on a shelf for a few years to generate private keys while comparing them to the ETH active wallets. Source code: https://github.com/adonley/ethereum-brute-force
What I would like added, is a parallelization feature that could potentially use a GPU on a real desktop PC for extra performance or a CPU parallelization feature to specify the number of cores that could be used. And lastly a notification funcion of some sort, export to a text file or any convenient way if it ever finds something.