Neuromancerrrr
With Kryptonian technology it will be much easier to deal with things like money, identity and knowledge since you can download knowledge to your brain which is one of the most useful things in Kryptonian technology, MC can basically be anything you want it is said that every Kryptonian he is a genius because of the time of evolution of the race the only weakness would be magic but the MC can learn since the old woman does not deny knowledge to anyone and allying with the asgardians would be a good start since they are two extremely advanced and powerful races.