I see there are some recommended companies on here.

I would recommend targeting 30 day minimum rentals (Most associations are 90+), allowing 12+ rentals per year (most allow 1-3), and no in-person screening for tenants required.

My recommendation would be to get approved as a Landlord, contact the director's office and request that an inspection be completed before a tenant is selected (sometimes they will do this as long as you select a tenant within 14 days - which you want anyways), and have an online application and screening resource in place.  

I would recommend you and your husband get on the same page about future investing goals.

I’d recommend focusing on building connections in Denver, exploring local markets, and considering strategies like house hacking or buy-and-hold investments to help you reach your goal of becoming a millionaire by 2027.Good luck!

If you were in my shoes, what real estate strategy would you recommend for scaling quickly (but smartly) so that I can replace a good portion of the W2 income from real estate investing?

What is your recommendation ? 

I've been recommending www.repstracker.com to my clients. 

Any recommendations on real estate investing course or classes? 

Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?