If you say that you're a cash buyer, you will need to be prepared to provide a Proof of Funds, which is a bank statement (or similar) indicating that you have the cash available and in your control.

I neither see nor smell any mold, but an AQ test is saying there is like 3500 spores cubic meter, which is supposedly an indicator of a remediation that is needed. 

We had our GC review the property and he indicated we could recapture that 300 square foot by turning a workshop into a 4th bedroom that overlooks the mountains and pool.

Numbers indicate that selling is your best option.

Like @Saravanan Saravanan stated above our local custom is to prorate all the current year taxes to the day of close and that would be indicated on your purchase agreement and shown as so on the closing disclosure.Did you have an agent representing you in the transaction?

  $1800 minus $2120  indicates a $310/month long term negative cash flow. 

This is a high-level overview and a bunch of other small steps is also in the mix.Your line of questions would indicate to me you should connect with someone that has more experience in this avenue.

If you're asking about the boxes next to the signature line (like those shown in the photo below), that's just to indicate the role of the person signing that they received the disclosure. 

Much higher than that may be indicative of a leaky toilet or faucet. 

Those values are not indications of the actual home value.