But our ultimate goal is a large portfolio of long-term rentals (100+ units).

We fell in love with DSM while living in the South of Grand and West DSM areas, but ultimately had to return back to the east coast last year.

It's the option with the least complications & sets you on the path to FIRE, which is your ultimate goal!

Start with BiggerPockets Ultimate Beginners Guide (free).

Start by reading the Ultimate Real Estate Investing Guide: https://www.biggerpockets.com/guides/ultimate-real-estate-investing-guide/introduction2.

So, I don't mind paying more for better class properties and working to reduce debt and increase cash flow over time that ultimately will contribute to, but not be my entire retirement income.

Start by reading the Ultimate Real Estate Investing Guide: https://www.biggerpockets.com/guides/ultimate-real-estate-investing-guide/introduction2.

Luke, Ultimately Boulder is a very good rental market.

Finding a good mentor can help, education helps, sources like BP can help ultimately action is required.  

Thanks for the breakdown - very helpful.In regards to how lenders look at the rent - I'm ultimately wanting to make this a Mid Term Rental if I hold it.