If you’re going to do this, I recommend renting weekly through the Lyft/Hertz or Uber/Enterprise route. It costs more per week, but both networks have a quota where free rent kicks in. But you’ll have to drive superhuman hours and only for the one network to hit the quota.
Its for that reason that, unless you really, really need a car, I would suggest not doing that. If you want to have any kind of a life outside of driving, then you're likely not going to make the high quotas.
