Ginyu-Force gets destroyed, in my opinion. Whether speed increases with Oozaru or not is debatable, but he already has enough power as an Oozaru to defeat Captain-Ginyu, Goku/Ginyu-Force style. Which means like one-shot.
All the other Ginyu-Force members are way too weak to be able to harm Vegeta, and Goku owned them anyway so he can easily defeat them all on his own without anyone's help.
That leaves Captain-Ginyu alone, and Vegeta could easily win, if he can get a shot in.