Your chances of finding someone to help you will slightly increase if you put the reward in escrow first. Running a GPU farm costs lots of money and their operators want to make sure that payment on success is guaranteed.
He doesn't have any BTC in hand according to his posts. He wants to recover an old wallet where he has BTC and will give anyone 10 BTC who can help him open the wallet which is password protected.
OP try to reach the recovery services. I guess there are some good of such kinds of services.