Query regarding VISA app after HSMP approval

Hi All,
Once you get a HSMP approval and when you are applying for your VISA I understand that we got to use the VAF1-Non-settlement form. In the VAF1-Non-settlement form there is a column (Section 6) where you need to provide your financial details.
Specifially 6.10 How much money is available to you for your stay?
1. To support the money declared here do we have to show our bank statements and other supporting documents if any.
2. All those who got their HSMP Visa stamped, what is the ideal amount to be declared here?
3. Since we had already sent our bank statements to the HSMP team to get an approval, is it necessary to provide the statements again.

The reason I am asking these questions are because I am planning to buy a house soon and I would need some initial investments.

Thanks,
Runi