Welcome to Freelancer! There are a lot of good coders out there. Freelancer asks everyone to review the people they work with after every project. This will give you some insight on what to expect from the person you are getting ready to work with. This is extremely insightful with the numerous bids you have received.
Thank you for taking the time to write up such a thorough Project Scope. Clear scopes makes it easier to get a clear picture of what the customer wants. From the description I do not see any reason why this cannot be done in Excel with VBA code.
For the past 15 years I have worked with Excel/MS Access and 12 years with MS SQL Server 7.0, 2000, and 2005. I have been doing my contracting work with VWorker/Freelancer for the past 3 years; during that time I have completed 70 projects ranging from Excel/Access VBA to SQL Server database constructions. In my experiences over the past 3 years I know how daunting it is to try and describe what you are wanting along with sifting through numerous bids. As you can see from my reviews I strive to make sure my customers are happy with my services. I take a lot of pride in my work and stand behind anything I create for 6 months. Please feel free to ask any questions I am always willing to share my experience.
Best of luck with your search.
Michael
p.s. I am based in Phoenix AZ, PST, in case you would like to call and discuss.