The agent contacted me several hours later and agreed to potentially waste their time and energy with me on Sunday so I could get into some houses that me and my hunny thought were cute.

This move addresses the growing power needs of data centers, which are increasingly relying on alternative energy sources to reduce carbon emissions.

Additionally, a larger property like this is valued based on the actual cash flow, not sales comps, so you have the ability to force appreciation faster with efficient management.Adding the a 5-10 unit may also increase the amount of time you spend getting you closer to the 'Real Estate Professional' status for tax purposes opening up room for offsetting some W-2 income on taxes.  

Knowing a ball park figure can help me pick a price I will see if the homeowner will accept because there is alot of needed work)What kind of project planning should I do to make this an efficient project and reduce cost but keep quality?

Or is there a more efficient method to do this?

The only real differentiation can be in operations, and operational efficiencies.  

We bought Ocean Walk Shoppes out of bankruptcy cash, no lender wanted to to play here cost efficiently, about three years ago.

For most it’s a colossal waste of time and energy.

And being a beast of focus, attacking that 1-thing, will assure your maximum efficiency. 

Regulation has slowed the market and made it harder to be an operator.I've never operated my Airbnb to its maximum efficiency because of the time it takes.