Hello,
I read through your complete project description and I understand exactly what your needs are.
I'm guessing you need an Excel workbook, which multiple users can access, and edit it, and is saved on the cloud. In my opinion, Google Docs is the best way to achieve this.
I can completely set up everything for you, and get it up and running within a day.
I understand I'm a new freelancer here, and you would want someone more experienced. But, I can assure you this will be done quickly, and comfortably, without any hassles.
Looking forward to working for you.
Good day.