With respect to my investment property, we put 20% down, so no, we did not do FHA with FirstBank. It is in a 7/1 ARM now that we are going to refi next month into a 15-year. It won't cash flow much, but I don't really care as it is a long-term hold and the rents will eventually catch up to turn cash flow positive. If not, we have enough in cash reserves to carry it for 5-years. Also, I am happy to have the principal write down of almost $1000 per month. This is not a strategy that I would recommend, but did want to share this example with you. Anyway, we can chat more about that if you would like.
As far as FHA goes, it might be a good option for you to get into the property since you don't have 20% to put down. There is an option for you to pay the PMI up front so you wouldn't have to refi in the future. If you are going to hold on to the property for several years, then locking in at a low rate now will pay dividends in the future and the PMI has already been paid for. Basically, they are going to bake it into your rate.
I agree with you about the Denver market. As you know none of us have a crystal ball, but I feel like if you buy and hold, then over the long-term you should be fine. I am telling all of my clients to commit to holding on to a property you buy now for at least 5-10 years. And, commit that you will not sell the property in a down market. If you look back at the crash in 2007-08, people that sold then most likely lost their shirt. If they would have held on, they would be sitting pretty today.
Here is a link to an article I wrote that explains why I am still bullish on the rental market in Denver.
http://www.discoverhomesincolorado.com/blog/denver-real-estate-housing-market-snapshot/
This is what got me, "One of the reasons we are bullish on the housing market for real estate investors is a recent article from The Denver Post. In the article the journalist stated, “The state demography office estimates that Colorado gained 45,300 new households in 2015 but added only 25,000 new housing units. Since the 2007 recession, the states home builders and apartment developers have undershot household formations by 128,000.” The report also mentioned the Zillow rent index, which showed the average rent in Denver in November 2015 was up 9.7 percent to $1,952 per month. Denver ranked third in the rent index by Zillow, which was only behind San Francisco and Portland."