As a point of interest, 4-plex units are still single-family and you would use conventional lending rather than commercial, so if you use those early "easy" mortgages on 4 doors here and 4 doors there, you will gain more cash flow per acquisition, which assists in growth.  

My question is, with Denver's astronomical economical growth, how will this election affect our housing market?

It was significantly better than most of LA as far as local job growth, income growth, population growth, millennial growth and basically running on all cylinders.

That being said, if I were you, I'd try to find the best blend between housing prices and population growth/housing starts if capitalizing on long-term appreciation is your primary objective.    

Since I'm about to graduate high school, I'm going to have a huge amoint of free time that's going to allow me to focus more on my personal and wealth growth.

The bottom line is there  no clear indication of either tremendous growth or serious decline in the city.

Of course, utilizing other performance metrics/ratios encompasses more idiosyncratic factors, such as financing terms, closing costs, estimates for recurring capex, growth forecasts, etc.

Look for areas of sustained population growth and stable economic drivers.  

I'm not a fan of BOOM/BUST state investing because I am looking to invest for CASH FLOW, not appreciation and speculation, which is why I'm looking to invest OOS in areas that have signs of emerging markets through growth, jobs, stronger economy, etc.

I even put this number next to a 7% growth in the stock market to see how it would compare and most properties peak in their difference over the stock market around year 12-15 on a 30 year loan.Do you include the loan paydown?