I have been able to save about $20k and am ready to purchase something that will supplement our monthly income without taking too much time away from our current jobs.

Luckily my wife has been saving for about 25 years and even though school now is pretty expensive we are still getting by.  

@Jacob Lewis, Hello, this sounds like something to arrange with a probate lawyer and is handled through the Clerk's Office so it would be online.

Or do I open personal checking and savings accounts for rent and security deposits? 

I tell him that that was factored in , if I took it to the landfill they charge $ 75 a ton , there was 5 tons so he saved $ 375 dump fees .

So, between the cash flow and the tax savings, 9.44% doesn't seem like much.

Just go online.  

I too asked that of a local agent that is part of a RE investment group I belong to and she was great at getting me some information and discussing the very same thing.What she mentioned about the schooling was it works for some just to do the online but others need/want that classroom atmosphere to get answers quickly.

Only when needing the lower rate to qualify for the loan. 4.65% is very low, consider we did investing for decades with 10% money.Homes usually are held for 7 to 10 years, so your savings on interest is limited and it's tax deductible to boot. 1-your tax rate times the interest rate is your real after tax cost. 

In the meantime, cut out ALL non-essential spending and save some coin.