Angel investors might be interested, but you'll likely have to give up a portion of the ownership or future profits, and there could be potential complications in managing the investor's expectations and involvement.

The building is now vacant in the bottom portion including by sister's business.

If you are nearby, if you have ever been a pizza delivery person, maybe deliver a pizza to the wrong house that may or may not be the one being foreclosed on so atleast you can see inside a small portion. we used to just go knock on the door some folks would actually let you look around.

Projected sale: 950-990k Replacement property budget: 990k - 1.1M Plan: rent out the replacement home until meeting the requirements, then move into it while renting out a portion of the home via short-term rental 

It is a great time to buy.   

can you refinance at the end of an interest only loan into another interest only loan?

The only time I'd say it's an okay idea is if either: The area you're investing in is expecting so much appreciation that you will easily profit off that (watch out for mortgage interest though...the appreciation needs to be higher than what you pay in that and expenses to make it profitable)You have some specific reason for wanting to do it- family ties, future home, major long-term hold, etc.Maybe I'm forgetting another one, but those two are all I have for now...

A lot of times these threats do not matter much to Contractors, but they may help.

But since that time I left my corporate job, moved states, my daughter was born and is now 6 months old, and I began investing in a new city.

I have done BRRRRs in Milwaukee for a decade+ and if I am not on the job 2-3 times a week, things go sub-optimal.