SharePoint DMS

We have the DMS product developed on SharePoint 2010 Server (Standard) using features like Drop off Library and Document Sets. We have a requirement to develop the same product in SharePoint foundation because of the CALs constraints. With this below are two approaches I would like to propose, could someone please help me validate these approaches ?



1) Here we would keep core DMS system in SharePoint server but the data surfacing for end user would happen from the SharePoint foundation sever portal, where we would use the SharePoint OOB web services to pull the data from SharePoint server into SharePoint foundation using system account. Do you think with this we would face any licensing implications because in-directly we are pulling the data from SharePoint server using impersonation ?



2) Here we are planning to redesign the whole system in SharePoint foundation with lesser set of features, but I would like to confirm if SharePoint foundation would still support the same sizing (4TB Content DB) as what is has been expressed in the document below for SharePoint server ?



http://technet.microsoft.com/en-us/library/cc262787(v=office.14).aspx



Thanks in Advance

Ajay Sawant