According to several blogs/tweets I've read, FSU's preference is 1) Keep ACC intact with better TV deal; 2) SEC 3) B10 and 4) B12
#1 likely won't happen without ND
#2 - Due to new SEC Network, SEC prefers expansion outside of current footprint, likely with UNC and VPI
#3 - FSU is not AAU and it doesn't appear B10 will bend on that (Nebraska was AAU when invited by B10 otherwise they don't get in).
#4 - By default, B12 is likely destination if ND doesn't join ACC as full member or if ESPN doesn't re-do ACC TV deal without ND.
I think Florida has issues with adding FSU to the SEC.