It is like asking how much does a car cost?

Dave is right, expensive car loans, bad idea.  

You are literally fighting the Federal Reserve Board who is trying to slow down the economy right now.  

We've considered selling some of our properties to leverage the building and reduce our total loan amount but would love to hear your thoughts on this strategy. 2) Should we opt for a small apartment building - thinking economy of scale? 

We also have a thriving economy - logistics; health care; several universities; plenty of opportunities for non-partying tenants.

-Move money to stocks - relatively cheap now-Financing balloon (they either need a new loan or have to sell - and a new loan may not be practical)-Upgrade - perhaps they've gained some equity recently and they want to redeploy that capital to a larger building and take advantage of the economies of scale

What happens to your investment if you cause a car accident going to the movies this weekend and end up with a judgement?  

Quote from @Luke Carl: I think you'll find the tax advantages are the same regardless of sole prop or llc on title.

Calling @Avery Carl!

I'd keep rent low, no car note, frivolous spending minimized, retirement accounts maxed(401k & IRA), savings a high allocation.