With the help from my wife, who has experience in interior design and an aspiration in home staging, we set a goal of obtaining several buy and hold multifamilies while simultaneously searching for occasional fix and flip properties.

If you were the lien holder on a property, you would not want your interest wiped out without being notified.I have seen other properties on these two separate default tracks simultaneously, one for mortgage default and one for tax default.

again I think the buyers lender would need to approve this.How would I set up a simultaneous or double closing?

I am also an agent so I will not have realtor costs if I have to close and then sell or if we do a simultaneous close, it is possible I could also represent the Investor (Buyer) as well. 

Many deals look great until you get in the middle of the rehab, and costs and project length simultaneously rise - kills ROI. 

Seems like a great way to gain knowledge and capital simultaneously 

Now, though, it's wave after wave, and simultaneous waves coming from all sorts of directions... and the ripples are just not as logical anymore.I agree with Karen... it's one of those "sit down, buckle up and hold on" times of life. 

We are also basically doing all 3 investment strategies simultaneously:1. 

A better way to start is to dig in here and look for some deals simultaneously.  

If you're hoping to do a simultaneous close, then you could always try.