Approach of a big integration

What can be the better approach to achieve the following: given the rate limits per second and day, we have to integrate and retrieve the information of about and maybe more than 57.500 members from the RE API, so for each member, we need the information of memberships, actions, and name formats, so this can be a 172.464 request per day, so the problem is that the base is 100.000 calls per day just for one of our customers and with 10 request per second we have to slow down the time of queering.

Thanks