Edge Router Lite on PPPoE 1Gb

Hi,

I'm not yet a user of an Edge Router but I want to purchase one soon, but before that I have a few questions:

1. Can I have 1Gb/sec troughtpout  (WAN > LAN) using hardware offload with the router if my WAN connection is PPPoE? considering NAT, firewall rules (not many) etc

2. If I enable hardware offload on the router how many functions will I have then? QOS, packet inspection etc...because I gues not many of them will remain active.

Thanks,

     Adrian