Unusual tax situation help on flip

[Ryan Lucht]

Hi all, 

4 people (Myself, my girlfriend, girlfriend's sister and her boyfriend) just completed a flip that will go up for sale this week. Do you have any guidance on how taxes would work in this situation?

My girlfriend and her sister's boyfriend's name are on the property. The property was owned for less than a year. I own a rental property with someone un-related to to this group (not our primary income earner). This is our first and only flip (fell in our lap type of thing). We all file taxes individually. If we sell around asking it will be around 25-28k per couple after expenses/fees/realtor/etc, without taxes though obviously.

1.) Could we cleanly split the profits 4 ways or would we have to do half to my GF and half to the boyfriend and have them deal with the taxes?

2.) Could we get around being classified as a dealer since it was a one time flip and we all have normal 9-5 jobs?

3.) If I can convince my GF, is it possible for her to roll over our portion of the profit as an "investment" into another property my business partner and I will buy with a 1031?

4.) Any other general guidance?

Thanks!

Ryan