It is my understanding that the Wisconsin statute is very explicit in that it says remarriage in that state "or elsewhere" within 6 months makes the marriage void.  So if you are going to get married elsewhere to avoid the 6 month bar and then intend on going back to Wisconsin to live I would hesitate to jump in to things,  It is likely that Wisconsin will not recognize the new marriage.  Check with an attorney in your area.  Good luck.