Lyra owners!

Hello everyone I recently put down a down Deposit for a new Lyra Delos cartridge for my heavily upgraded Oracle Delphi mkIII with sme iv tonearm. I have a large collection of vintage records and a modest amount of 180gram vinyl. After hearing the Delos is crucial on vta angle. I am wondering wether to set up the cartridge for regular 120gram vinyl or 180gram. I’m the the kind of guy who keeps it simple and would just rather set it an leave it. Not too worried about changing it for each individual vinyl. Also I’m wondering what ratio of step up transformer for the cartridge. I have a music first audio classic sut with 3 different ratios 1-20 1-10 1-5 with 6 different loading positions and a open circuit. Let me know your thoughts  On setup and ratio loading. Thanks