I'm a 5'4 250 lb female and my bra size is 40D so I'm around your stats. I can fit on pretty much everything in the park. Most require an extra push but I can still ride comfortably. The only rides I'd say I have some issues with would be The Beast, racer, WindSeeker and Diamondback. I've only had one walk of shame and that was the 2nd time I rode Diamondback. The main thing with Diamondback is if you carry a lot of weight in your hips/theighs it's harder. I've rode everything in the park except Drop Tower and I hardly ever have problems. And I've never had problems with over head restraints. Hoped this helps!