I did some checking around and it seems like all the steps have a weight limit of 200 lbs. However, I think that this number is put on for liability reasons. Like the company wants to avoid any possibility of litigation by putting a lower weight than the equipment can actually handle. I'm very confident that the regular club step could handle more weight. I used to work out at a club and saw lots of larger men and women taking step classes without any negative consequences.
I'm pretty sure that some of women and men here exceed that weight on a routine basis. When combining their own body weight + the weight of the bar or dumbells they're using, it could go over 200 lbs.
If it were me, I would purchase the original club Step and start out with just the platform on the floor for step workouts and use the risers with it when using the step as a bench for weight work. However, that's what I would do. You have to be comfortable with whatever decision you make.
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