In my experience as a DIY landlord 50% is way high.  

You might consider being a hard money lender or doing a joint venture the first time or two until you know more about the process. 

I would also join the local REIA to build possible Joint venture relationships. 12K and good credit is a good foot in the door.

Hi All,I'm looking for advice on channels for advertising a deal to potential investors.Do you ladies and gentleman have suggestions on platforms (online and offline) for connecting with individuals and groups to find a good fit for a joint venture on the following project overview?

Hi All I am excited to begin my new venture as a wholesaler.

I don't think you need to  be pre-approved by a lender if you create credit lines, check protection, line up friendly joint ventures, syndication. 

Wish you all the best on your real estate ventures!

Until the PMs goals and mine are better aligned, I will DIY.  

All the best on your real estate venture!

I think a potential way forward for you would be a joint venture with someone local who has the experience and lines of credit with the lenders, and can mentor you into the process.