I want to have a guitar permanently down-tuned for playing the classic Black Sabbath catalog, post-Paranoid. I have an SG strung with 9-46 (Hybrid Slinkys) but wow, things get pretty loose and floppy when tuned down a step and a half. Will heavier gage strings do the trick? Or do I need to find a Fender scale length option? Or even a baritone, perhaps? I’m no doom metal or stoner rock guy - I just really love those first six Sabbath records.