There are weight limits for bikes, but I don't know the limit for your particular bike. I also don't know if the weight limits are in place for legal reasons, meaning they are very conservative. Can you check on your model of bike to find out? Manufacturers usually have limits in the manuals and online materials. The lawyers make them do it. Nothing against lawyers, they are just careful, is all. Weight limits include the rider and any clothing, gear, panniers, etc., not just rider weight.

Very heavy riders may benefit from stronger wheels with extra spokes. But I don't consider 215 to be in that category. However, if you find that you often end up with broken spokes, you may want to consider stronger wheels.

You say that your bike is partially carbon--what does that mean? Steel with carbon fork and seat stays? I wouldn't worry about steel/carbon. Not sure about all carbon. Aluminum is pretty jarring, particularly if you are used to carbon. Go all steel before you go aluminum.