Based solely on chest of 47", you are at minimum a 2XL in Henderson sizing.Thanks for the heads up on the suit. I'll post it and see what I can get out of it. Seems to be in good shape but to tight in the shoulders and neck. Not sure about my shoulders but my chest is about is around 47 and my neck is 17.5.
My 5/3 Quicksliver is a XLS and seems to fit well. I hope to jump in the pool tomorrow with all my gear and the 5/3 so I can set my weight. But I think I'll use my neighbor pool. The one at the shop is very warm.