In Colorado one component of the Contract to Purchase are title work deadlines.

We decided to just leave those as we have paid down enough of the mortgage interest that they are essentially lower % than the current rates. 2 yrs ago something major changed at my job and it was no longer aligned with my purposes.

You should be researching these questions as an investor to determine what you need to do to your project to align it, so that you have product/market fit. 

Some example premiums (all owner occupied):1950's home with all major components replaced in the last 5 years (HVAC, HWH, Roof, Plumbing, Electrical)....inland. $2500 a year.

Sometimes their goals are different than mine, but if I aligned with their goals and would buy the deal, I'm interested in every single one. 

If it's a short-term rental, you may have wrinkles, and it's good to get that discussion from your tax advisor.Carpet is generally tangible personal property and thus a 5 year asset if used in a rental real estate activity.A water heater is a major component of the building's plumbing subsystem under the tangible property regs and is thus part of the building unit of property (i.e. a 27.5yr GDS asset). 

Whoever you have design it can make choices to save cost like bathrooms and kitchens sharing a wet wall, dimensions aligning with common materials, etc.

And how does one go about purchasing so many properties and have them all align to close simultaneously?

The property is offered to an investor with two main components: 1.

Age of systems and major components, upcoming repairs, any zoning/legal/environmental issues, years left on the leases, reason for selling, surrounding area and potential to find new tenants at same/better rents, lease terms (who pays for repairs, taxes, etc.) etc.