Voting for Alan Grayson in the primary is EXACTLY the sort of thing the FDP would do. It'd be an encapsulation of everything wrong with the party: automatically jumping at the more well-known name like its a shiny thing, expecting to be saved by RPOF choices, and of course an overestimation of their support in competitive races.
A Grayson primary win followed a campaign where it looks like the Democrats might FINALLY WIN ONE ending in a close but definitive Republican victory in the general is both hilarious and inevitable.
Don't worry, the spoiled rich Republican kid is heavily favored.
I would expect the guy who beat Allen West and who got 60% in a fairly Republican district in 2014 to be favored over the loudmouthed jerk who's going through a really messy divorce (and didn't he accuse his wife of bigamy at some point?).