Hi,
Although you have mentioned in the bid request to look at the attachment, there is none attached to the bid request actually so please send the same. Once I have a better understand I should be able to suggest you on how to make the process even better or else go with your existing suggestion itself.
I have also placed a bid on your other project for inventory part and can take care of both.
I look forward to hearing from you.
Regards
Rohit