Wordpress Sites transfer from 1 hosting to another one

Need to transfer 50 wordpress sites (db + files) to another hosting account within 2 business days. db dumps + sites files backup will be provided, as well as hosting account access. You will need to: 1) create subdomain on new hosting account 2) create mysql database on new hosting account 3) upload files to new subdomain created in #1 4) import mysql database created in #2 5) edit [login to view URL] file to accommodate new database changes. 6) check subdomain to ensure that site transferred properly. In total ~550 wordpress sites need to be transfered. This particular project is for 50 SITES ONLY.