Ok, finished the mockup and.....no good. The bust was completley wrong. The gussets were just too small for not so small bust. The overall length was good though. The back had a few wrinkles resulting in length needing to be taken out right above that hip gusset.
Since then I have redrafted the corset. Made the gussets bigger, and extended the top of the corset up to where it will cover the bust a little more. More boning is going to be needed as well in order to get the support I need.
For now, off to finish mockup #2!