You are clear to foreclose without delay although you should prepare to oppose the debtor's motion to impose the automatic stay. 

Take some time, review it, make sure there is language that protects you if you want to back out of the contract early or specifies who pays for any unnecessary damages to your property during construction.Network with like-minded investors, ask for referrals!

Deals fall out of contract all the time due to strict guidelines FHA imposes.

All of this info can be sourced from online platforms and articles, real estate investment meet-ups, and general networking with folks in the industry.Maybe studying all of this is unnecessary, but at the end of the day, the more you can perceive change in the RE space, the better you can adjust your strategy and criteria to profit in the market.

No sense in creating unnecessary animosity between you and your renters. 

Are there other creative tips or contingencies (or lack thereof) that you find increase the chances while that won’t impose an unreasonable level of risk?

When I was in your shoes I asked myself “What's the one thing I can do, such that by doing it everything else is easier or unnecessary?”

I can tell that English is not your first language, which is fine, but unless you plan on hiring someone to do that kind of marketing that will be an unnecessary hurdle considering there are a ton of ways to make money in real estate that doesn't involve direct face-to-face sales.

It turns out to be an odd number with decimal places that just seem unnecessary to report (e.g. we own an average 25.6% interest in 347 units).I don’t include co-GP holdings because that can skew the numbers too.

I'm not trying to bash anyone working in the trade or cause any unnecessary fear.I'm giving my opinion based on a lot of personal experience.