Deploy ASAv in the cloud

I am attempting to deploy an ASAv in a VPC using the C4large EC2 Instance. I am using 3 interfaces on the instance Eth0, Eth1, and Eth2. I have assigned the elastic ip to Eth2 (ethernet 0/1 on ASA) but Instead an ip from my inside managment ip get's assigned when I configure it for DHCP. Is there a way to assign a public IP to the the outside interface (ethernet 0/1 on ASA) in this case, and have my traffic be controlled by the ASAv using it in routed mode instead of using the amazon router (IGW) to route out to the internet as well as use it as a VPN concentrator,