I’m curious about the same: I’m eating well, but my gut’s ballooning. Might be overeating a bit for my size (5’6", 160ish) at 2800-3000 calories, so I wanted to toss in some cardio.
It’s hard to lose weight on Rippetoe. You need to eat in order to support the strength gains. Try Tabata’s or barbell complexes, either after your workouts or on alternate days. You don’t need long sessions of slow cardio every time, maybe once a week is you do the high intensity work 2 or 3 times.