The idea of waiting to prepare better is good if only you have not sorted out your Discretionary income then you can wait to figure it out before you can proceed with your bitcoin investment but if your Discretionary income is been sort out i think there is no need waiting further as you can start buying bitcoin the earlier you started the better for you as waiting can come with several challenges of not starting when you had the chance or the opportunity to get kick off as you might get discouraged and end up making a postponment or keep on procastinating and never getting started as the more you keep waiting the more you keep missing out some good buying opportunity.