I wish I could give you a quick, go-to answer, but I wouldn't feel right without finding out your risk tolerance and know a little more on what you would feel comfortable with.

Also find out how to file a judgement for outstanding rent-you'll likely never see the money, but if you can get it attached to his credit score, that would be good.

If these have the 2 position's to make up the puchase price, how can I use BiggerPocket's in finding the 2 lender's to satisfy each position to purchase the cash flowing property?

If , for example, you offer  90k without talking to your agent and after the fact your agent finds that an offer of $80  appropriate, you already planted the seed of 90k in the seller's agent's mind...

I have had trouble finding an answer to my question.

I'd love to hear from experienced investors about:Best resources for finding these listings (beyond the obvious MLS)?

I will find some REIA meetings to attend in my area. 

During this time that the project is finished, you will be able to rent it out and you will be able to offset your monthly payment with rent, but also will need to add in utlility payments.To get out of the bridge rehab loan, you will need to find another loan - likely a DSCR.

So you'll want meticulous records that show the money going only into that property.All this being said though, you may find that it is to your advantage to not try and carve these out of the sale. 

@Skyler HeimerTo find a property in Santa Monica, work with your agent, use online platforms, and consider different types.