I realize that there would be additional transport costs to Colorado.

@David M.As @Chris Tabanico indicated, a self-directed 401(k) is still a 401(k) style retirement plan, just with broader investment choices.When you retire from service, you will have the ability to rollover all or part of your TSP. 

Shutters and some simple, low maintenance landscaping would certainly create some depth....just be mindful of any additional trimming/weeding when developing the landscape plan.Best of luck!

My question is, can we sell it now or do we need to hold it for an additional 5 months so that we have lived in it for 2 consecutive years, in order to be able to avoid being taxed on its equity?

The DP3 provides all the coverage of the DP1 and additional perils.  

My question is, assuming we are not willing to fork over an additional 75k to close the mortgage out, do lenders offer refinanced mortgage packages for such a small amount of loan to value?   

Feel free to DM me if you have additional questions.  

There are hedge funds that accept smaller investment minimums but I am a bit skeptical of them.All of this is of course in addition to regular old investments like mutual funds.

From your previous experiences, how much additional rent should be charged?

I had a family in their 32 days after I listed it on the sight (who ended up staying for 6 months)....CHBO also will give you a 30 day guarantee...so if no one books your rental within 30 days of listing it, they will extend your membership for an additional 6 months for free...yeah I got that deal too.