As usual, Nathan is spot on.... 

So I have 30 parking spots and really should have 60 spots to be safe for the type of business that is renting. 

Quote from @Chai Xiong: I'm still looking around Disney World Chai is looking in a spot that's still good with some controversy.

If I'm in your shoes I would checkout any local RE meetups happening nearby, that would be a great spot to meet some other folks in your shoes and/or other lenders who might be able to give their perspective if it makes sense to pull out money from your home rn or not. 

To @Bryant Brislin point as well - you probably don't want to start anything without first confirming that this spot would be feasible for a national chain, or at least a local chain/restaurant that would be interested in the space. 

@Drew Sygit is spot on.Quit being offended, no one has time for that.

It tends to be the sweet spot in Detroit today because it offers the best risk-adjusted cash flow.

About 6 months into the lease, he thinks he smells smoke and climbs in the attic and searches for 3 hours for "hot spots" using a thermal imaging camera (keep in mind he is the town fire marshall),  finally after not finding any hot spots in the attic he goes to the back yard and discovers the neighbor is BBQing.  

It looks like a good spot.

This also makes it harder for you to develop a sudden soft spot and let her talk you into extending.