I'm going to exclude my personal residence from this because I don't view this as an investment, I need a place to live.Excluding my primary residence my current breakdown is 47% real estate 53% stocks/cash. 

Primary residence is paid off. 

You might decide that you absolutely want to own your own residence there and I assume you can afford it since you already own properties elsewhere, likely in beautiful Hawaï.

The duration for rent increase is one month for tenants that have resided less than a year, two months if more than a year. 

This defers capital gains and depreciation recapture taxes on the sale of your fourplex.After converting it into your primary residence, you may qualify for the primary residence capital gains exclusion ($250K single/$500K married), but only for appreciation after the conversion; gains from the rental period remain taxable.

Because it's unlikely that you'll ever qualify for DPA after you own a primary residence.

Between a 1031 Exchange, HELOCs, and a partnership, I'm up to 15 doors including my personal residence.

Since the original loan was apparently for a primary residence an LLC could never qualify because it isn't a person who would owner occupy the property. 2.

Investment Info:Single-family residence buy & hold investment.

They eventually sold their business to another company and things were fine after that.All the others were easy.If you are going to switch, you might want to try that after a resident moves out.