Since I have so far only done the pool session with the drysuit, I most certainly am new, which is why I am here asking questions. Plus, this "cupcake is sporting some extra buttercream", so your comment about obesity was also a direct hit. Plus my legs are short relative to torso even when at correct weight, and stock sizes of any kind of clothes give me "rumple legs" and "orangutan arms". Expensive as drysuits are, I am determined to get the fit that functions.
As I feel bad now I am going to try and be helpful.
If you have already brought the suit you can get it altered. The cost shouldn't be too ridiculous. However don't do this through your local dive shop. Go directly to someone who makes drysuits. They will be able to adjust the suit a lot and get it working for you.