Is it bad to leave the car on only the front jack stands for a couple of days?

 

No.

 

Mine is sitting on jacks as I speak

 

Yes!.....Umm I mean no.....My car stays up on jacks for weeks at a time...when it's down just like regular...no issue there...only thing is somtimes you gotta jounce the front end to set the shocks right again...