If he hasn't previously asked you to accept an immediate departure I would sit there. (You should be asked before lining up - as should you inform the controller if you want more than the minimum vortex seperation)
The aircraft going around would be a bit peeved, but it might teach the controller not to do it again!!!!
Vortex minima is just that ...... MINIMUM. (assuming the departing jet was in the small/med/heavy category.) and it MUST be applied by the controller.
However - the tips stated by Jhieminga are valid, but at 100 feet in climb out I would rather not risk being knocked around.