Is this toy big enough - Big toys, expert humper

I’ve got a big dildo (8.5 inches x 5.5 inches) that I love, but I’m wondering if it’s *actually* big enough or just ego-stroking territory. I’m 21F and used to pretty average-sized toys, so now everything feels like a workout-good workout, but still a workout. Does anyone have experience with toys this size? Am I setting myself up for overconfidence or underestimation?