I have a proposition, which could help save nerves and money: print only a couple of layers where the support structures actually touch the model with the (e.g.) second extruder and hence the second material. The rest of the support structures could be printed with the primary extruder and hence the cheaper and easyer to print material. Of course, there is a limit to that approach for support inside a model which can not be removed mechanically.
Thank you for considering!