So maybe the first step would be to upload some humans and give them more processing power,
I would like this plan, but there are reasons to think that the path to WBE passes through nueromorphic AI which is exceptionally likely to be unfriendly, since the principle is basically to just copy parts of the human brain without understanding how the human brain works.
First thing you should do is talk to the people that are already involved in this. CFAR seems to be the gateway for man people (at least, it was for me).