I would go gas, lot more efficient and reliable

Again, if its not being reported that's great for your credit but cover yourself for any balance that may be owed by ensuring its not in the documents for the DIL. 

The HVAC system is a nice clean look and very efficient.  

It also means that your renters will want to vet their subletters carefully to ensure they get their security deposits back, etc.

You will have to read that to understand.We always switch our tenants over to our lease at the earliest moment possible to ensure all of our tenants are operating under the same agreement.

If the deposit is double the rent, you could; but I'd do an inspection now (and after they move out) to ensure there is no major damage.

Biggerpockets doesn't really allow you to search efficiently for them either. 

The property management software makes it extremely easy and efficient.

This ensures that I have something in case **** hits the fan. 2.

Then we also have to track water bills to ensure tenant reimburses us for paying them.Is there an easier and more automated way to track and quickly tally the security deposit refund due to a tenant?