A syndication is a pool of investors that combine their money together to purchase an apartment complex.

Not bad considering all four properties combined is cash flowing me around 1800 a month. extra I am using to pay down some debts.

She wants to sell it, and we are considering buying a duplex together so that we can share our assets (lawn mower, washer/dryer, etc.) as we did when we lived together.

That sounds like a great combination for flipping!

Hello BP, i read somewhere that you can enjoy low interest costs and flexibility by combining both term loans and overdraft.

If you combine that with the fact that you can probably get the properties cheaper anyway (due to less investor competition and more motivated seller) then, it balances each other out. 

The best podcast on student housing I've ever heard was here on BP a couple weeks ago with Bill Syrios.  

Turns out the landlord was her parent, and I got that listing for a short sale. 

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If I did the math right your combined debt to equity ratio is about 97% on the two properties.