BRRRR is a bit trickier as that is designed for a deeply discounted property which are rare in this market at the moment.

The biggest challenges are the importance (I cannot emphasize this enough) of the team that you are working with and short-term financial challenges (you'll end up paying more interest for a few months) as well as maybe some sweat equity or personal time that might be needed (choosing fixtures, finishings, etc although that can also be delegated to a reasonably priced interior designer).What is important is for you to have a good assessment of your priorities first and also how much are you willing to be compromising in the short run for a much higher long-term return.

Are there channels to find reliable contractors experienced in Leadership in Energy and Environmental Design (LEED) or along similar lines with investor/budget-friendly prices?

You may look at one designed for Realtors called Agent Legend. 

Any ideas for design/copy?

That's not to say that you shouldn't ever just repair something... but in cases like that, where it's the age and design of the thing that causes problems in the first place, consider all options.

Once you do get the property designed and fixed it up I'd advice you get someone to build an automated system, this way all the tedious things will be done with.

Unless you’re in a very high-end area where renters will expect the best, potential tenants are generally looking for the best value they can find in the location they want to be in, so location always drives rents more than the type of finishes or design you’ve chosen.

This can be a huge tax impact.Part of the requirement (among several) is making the 500/750  hour designation. 

The design appear identical to a doggie door I installed on a door in my house years ago.