Would it be buying more of the same type of properties or expanding into larger properties?

I know of some folks in KC and Memphis doing new builds like this, but they are doing it within a much larger and long-term project that includes upwards of 300-500 units built over the course of 5-10 years.Assuming you're looking in Columbia, do you have a "B+/C" neighborhood in mind?

For larger properties, some of our clients run another cost segregation study at the time of sale.2) Partial Dispositions - Taxpayers can carve out and dispose of components removed or demolished from a building.

Network in person, see if they have a publication where you can post your deals and what you are looking for, and if there is a larger annual conference for investors locally consider getting a vendor table to talk about your business and what you are looking for.

The only issue I've had is a small period where the laundry pods would always be empty at turnover. 

For larger properties, entertainment options like game rooms or arcade games are often a hit.

CA has it's upsides and both states have insurance issues.

Those can indicate poor management, deferred maintenance, difficult and expensive upkeep like ocean front which will bring up issues with rising oceans, insurance, and hurricanes. 

One last thought is your likely going to be getting a larger depreciation write off with new acquisitions.

Landlord-tenant regulations are a bit complex in California and getting hands on is the best way to learn before expanding into larger investments.