I did purchase the course about a year ago but quite honestly it's just been sitting around collecting dust because I really didn't want to invest my time and energy into something like this that I wasn't 100% confident about.

That's one bullet and if you fire it you gotta hope things go well, or do you have 100k and have money to get in and out of projects with?

Ultimately, does anyone really ever set out to do real estate as a minor part of their life's ambitions and succeed in it as a side hustle that they spend a carefully limited amount of their time and energy on?

I didn't follow that advice, and found a great GC who would take a bullet for me and vice versa. 

Not a silver bullet but helps

However, it’s crucial to ensure that the HVAC system is adequate for the space to avoid high energy costs.Flooring: The hardwood flooring adds a high-end touch but will require regular maintenance to prevent scratches and wear.

At the end of the day, it's a better use of your time to move your focus and energy elsewhere.

Im in Massachusetss so I had Mass save (program to help with energy usage paid for by the utility companies) come through to do an energy assessment and identified there is little insulation in the entire building and that there is a lot of knob and tube wiring throughout the property.

That will depend on your time, capital, energy, and skills.

The biggest question in energy right now is data center electricity consumption and ownership.