excel VBA add on

I am looking to build an excel add on for MS Excel 2007 and 2003 version. This add on should 1. Be able to query & fetch data via API from Google 2. Be able to let users interact and select data that they would want to be extracted into Excel 3. Should have a nice html user interface where user can select the datablocks that they would like to see 4. Users should be able to edit the data that they have already extracted. 5. It should not take up lot of memory of users computers 6. It should allow login into Google Account via credentials provided by users. I should be able to provide designs once I select the buyer. I will select the buyer as soon as I get right candidate with reasonable bid.