need to update iStore quote with price frozen date, quote expiration date

Team,

We have a following requirement in Oracle iStore. When user logs in, we allow them to select a delivery date when they want their product to be delivered. This delivery dates are custom table with some entries for each customer accounts based on their location.  Once they have selected the delivery date ( request date), they are forwarded to Catalog/Home page.  Each of this delivery date (request date ) has another date (valid upto) is tied to it.

After this, Once they create a cart,  we want the cart to be priced for request date( PRICE_FROZEN_DATE in aso_quote_headers_all table ) and set the quote_expiration_date to be valid upto. We are able to set these two values correctly via using the ASO_QUOTE_CUHK's following method.