Note this calculation gets worse if you recognize the declining value of currency.  

It might make the most sense to just sell your primary residence and use it as 40% to 50% down payment on your future home. 

Quote from @Brandon Vukelich: Question: why would you sell an asset that generates a profit today and will generate a more significant profit in the future?

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*This link comes directly from our calculators, based on information input by the member who posted.I’m considering purchasing two investment condos to help pay for my children’s college tuition in 13 to ...

If rates become more favorable in the future, we'll have an opportunity to refinance.Why we bought itThe 55-unit I mentioned earlier is a perfect comp for us.

Future enhancements include the planned Silver Line rail alignment with nearby stops, as well as potential commuter bus services, pedestrian paths, and bike lanes.The development benefits from proactive rezoning by the city, transitioning the land from industrial to mixed-use urban development.

As I've come to terms with this I have taken the last five months to regroup and really think about the future which brings me to my post and what I'd like to get the communities opinion on.I successfully negotiated and acquired one of my duplexes in 2017 that I nearly have paid off (note balance is $54k, property value $230k).

Thank you and to you as well with your future endeavors. 

In the future, either get your Real Estate License so you have access to the MLS, or make friends with a realtor so they can get you comps to get an ARV.  

Since you want to aggressively invest in the near future, you will need cash and the 30 year option is the right one for you.