My 110g baby ball is on regular adult mice, and that seems just about right size-wise for her. She was 56g when I got her and on hoppers, but I moved her up to adults pretty soon, so she was eating adult mice by the time she reached the size of yours.
I didn't switch Ana Gwyn to rats until she was easily eating two large adult mice at a time and seemed like she could eat more, and she was over 200g at that point. As for switching, I got lucky and she didn't balk much at switching to rats, though she self-regulated from eating once a week to every other week once she switched. She also had a HUGE growth spurt right about that time, it's only been about 6 weeks since she switched and she's about 375g now. Dunno if that was the rats, or just timing!
ETA: I feed Tonks every Sunday, and Ana Gwyn every other Sunday. But that's more for my convenience, and I'll feed sooner if someone's hungry, or a few days later if someone isn't hungry on Sunday (well, if Ana Gwyn isn't hungry on Sunday. Tonks will eat anything and everything I offer her, whenever i offer it.)