Or when you get a parking ticket two minutes after the meter expired. 

After the expiration date of the loan term, I tried contacting the investor to arrange for the return of my funds, plus interest but did not get a reply.  

This one tested positive for E.

Specifics:Chicago far west suburbsCurrent appraisal: $175KCurrent mortgage: $90kCredit score:800+Liquid cash on hand: $75KPersonal DTI:<20%Total DTI not including rental income:<30%I would think this is a home run.

It depends on your portfolio's characteristics (and your credit score, liquidity) but the typical range is about 4.75% - 5.5% for a 30 yr fixed, with a 5 year prepayment penalty (if prepayment penalties are allowed in your state -- some states, like OH, MI, PA have restrictions on prepayment penalty terms & fees).

Looking for something liquid with moderate-low risk.

Take a clue from the US goverment.Another way to optimize is liquidate properties that don't have the best long term prospectives and trade into better quality assets.

@Randall E Collinsthis is where this wholesaling gets a bad name.. in some states Texas there is a carve out in Oregon its not legal unless you close in it first with your own money. 

But if there is already a tenant, whose lease expiration date will not leave enough time to renovate before the hard money is due, Can any thing be done to overcome this?

On the lease explain that they are all responsible for meeting the terms of the lease which includes paying rent.Tell them they signed the lease and once it expires or the early termination clause is invoked.