Floreant POS customization

I want to fit floreant pos to our business process: 1.) Add a. Customer management form to add delivery schedule every "n" days. and products to deliver and time of day. b. Manage customer borrowed item list on same form, items borrowed, the quantity and borrowed date. 2.) Add columns: Time, Days interval and next delivery DATE On SELECT CUSTOMER screen. 3.) If today is automatic delivery schedule for a customer, it should be automatically added in TICKETS AND ACTIVITY. 4.) User permissions to check/uncheck making/changing delivery schedule 5.) Fix bug on coupon/discount where auto apply not working when minimum value is reach on order. Also discount should not be possible to apply even manually if condition is not met. 6.) Item order report by customer with subtotal of orders 7.) Database use mysql or postgresql whichever is easier to install/maintain/stable/free (for client-server) 8.) Option to change Florieant POS banner to name of my business by uploading my own image to be use for title and header logo. 9.) Include source code of modification together with the compiled working POS upon delivery