Need expense management script coded

Hello I need an expense management script for our construction business. There are some scripts on codecanyan that already do what we want but we just want some changes incorporated into them. I have uploaded a document explaining our requirements. So you'll then check out the scripts and tell us which one will be more suited for us to buy and for you to start incorporating the changes. Also if you think you have or know of a better script that already does what we require and will be more easy for you to incorporate the changes then I am open to suggestions. Or if you think you would be better off coding it from scratch than tell me. The one thing I don't want you to submit a bid proposal without reading the uploaded document. So if you don't read the document then I won't respond to you. So happy bidding.