We’re planning to rent our home when we move—but we know we will be moving out of state. 

I am planning to get this HELOC before closing in order to buy another 3rd investment if God's willing.

They are probably including the roof in the price of the solar panels, and they make it enticing by offering installment plans.

We're planning to move there eventually and rent out our primary in Georgia.

Are you planning on it being a super quick flip and don't want to pay the rates on a bridge loan?

I’ve just accepted it over the years and come to the conclusion that the nominal amount I spend on legitimate business meals is ok to take as a loss.

Your investing plan sounds "boring" but in 15 years of this strategy you will have millions in assets that cash flow you to not need a job, and equity built up for continued growth or expansion. 

How are along are you in your plan and are you working with a builder yet? 

Very dependent on your local municipality and what they have planned for your area.

If you  do plan on moving into the quad you should identify what unit you desire - maybe based on the rent amount or the tenant behaviors, etc..