I like your ideas. Although some become harder to enact the less frequent your desired partner type is, which seems to be a problem for some people.

I'll note that if you are only willing to spend limited time on it and have the choice between improving general attractiveness and A/B testing profiles, I would pick the former.

I'm currently aiming for the increased salary and improved fitness.

I don't hold out much hope for OKcupid, I think I'll do better just getting out more to the sorts of events that the people I am interested in might go to.