Google Distance Matrix API: lat and long coordinate provided

I need to hire someone to develop a distance (in miles) and time by automobile and bus matrix from 400 longittude and latitude points to multiple addresses (10 addresses). For example I would need the matrix to be set up like this: ID lat, long Address 1 Address 2 Address 3 Address 4 Address 5 1 -84.1, 124 15mi. (10min) 18mi (16min) 15mi (14min) 2mi (3min) etc 2 -24.1, 140 17mi. (15min) 20mi (16min) 10mi (14min) 4mi (5min) etc 3 -14.1, 1800 10mi. (9min) 15mi (16min) 10mi (14min) 4mi (5min) etc 4 5 6 I would like to have the distance in miles and the mode of transportation in driving and bus. I will provide you all the addressess. The latitude and longitude coordinates will be from centroids of census tracts (~400 census tracts) to about 10 addresses. I will provide you with the census tract shapefiles and would need to you to identify the latitude and longitude coordinates for all census tracts and determine the distance (in miles) and time by driving and bus from each centroid to each 10 addresses.