Need Urgent Help - Drupal Experts Only

We need to implement the followings. The system has commerce module installed. We have the 3 offline payment option in it. There is additional validation in it, which is described below. Currently we have created a webform for cheque related information to incorporate with commerce payment section. We have added this webform in checkout pane but could not open this page conditionally on choosing payment option and the records for cheque details are saved in different place, with no connection with Order Section. Cheque details info are showing Result tab of webform without any connection with order number or details We also need an option to carry some data to be taken at the first stage of checkout process and that data must go till the process is complete and the same data should be merged to Order Deatil. 1 .Implementation of offsite payment option:cash,cheque,cash and cheque 2.. In checkout -- add payment options - cash - cash and cheque - just checks * check numbers mandatory. * always have amounts per cheque, date of cheques and # of cheques * min 100$ deposit -- max of 3 payments. - send this info to the backend in store orders -- and payment in order section 3. Add feature to send email to client to let them know when a check is deposited at the bank. Only Bid If you are Ready to Start Right Now!!!!!!