Meg, I noticed you were trying to decide on bustle options for a lace dress! If it helps you any, mine is also mostly lace, with the exception of the bodice. My seamstress mocked up three options for me that I posted about
here <<clicky
I'm probably going with the three-point over-bustle because of my fuller skirt (Mori Lee 2409) ... but the French under-bustle was a close second for me!