Start a single member (files Sch Cs and doesn't deal with K1s) LLC and pay DnB $500 to build credit quickly while boosting my personal credit and paying off all debt or converting all personal debt into business so it's off the personal reports for DTI.

You'll reduce leverage, boost cash flow (by not as much) and acquire another property.

It could create a very desirable product for a specific buyer that will give you a nice price boost or it could turn off some buyers who see it as a waste of backyard space.

This place has the education, network and willing participants to really help boost your game.

Finding a property that is stuck in time that an update will boost value and marketability is key. 

I'd also like to echo the sentiment of others in saying that it would be better if you just invest in a REIT or CD (chosen based on your appetite for risk) until you're back...BUT, and this is a big BUT, I feel that instead of investing money over the next 3 months, you should invest your time into learning about REI & read books that will help give you a great confidence boost and "success mentality".

The fact that you only had to put 5% down really boosts your return on cash, which is the metric I like to look at, looks like around 12.5% and 19.5%. 

Not sure which has done better...leverage boosts returns in an up market.

Does the existing building need an injection of capital to complete rehab, and thus boost NOI? 

In the long run it can actually boost appreciation because supply is so limited.