Reyes_II
There are a couple of things he could do : 1) Steal the Osiris ship and Upgrade it 2) Sam Carter is 16 years old, her mom dies sometime in the 1980s. You could save her mother and thus gain Sam's Allegiance and Jacobs. See also Jack's son..... 3) Start a business on Earth and improve Earth's technology. 4) Make contact with the Asgard and negotiate future knowledge for say cloning knowledge. I'll think of more later