Enquiry About Cloud Core router for QOS

Dear All,

For your information i plan to buy CCR1016-12G, we are web hosting company and i need to know is it cater to my requirement, for your information i have 2 internet connection and each connection is about 30Mbit bandwidth, each connection having their own 1 C Class IP, my connection is direct from the provider router, i mean my network at data centre for my 3 server rack, my plan to buy the device is for QOS each of C Class IP, for example i need to make a group of IP for certain limit of bandwidth and another group with different limit of bandwidth, so i would like to know which device are compatible and cater to what i have and is it possible with one device to control 2 connection with 2 C Class IP or i need to buy 2 unit of your device, another thing is my connection is behind the data centre router, so what i understand CCR1016-12G itself its a router and its that possible to setup? Next my question its about my public IP for C Class, currently all my server are based on public IP and i didnt setup anything as local IP for the connection, so is it possible to remain with public ip instead of i need to resetup all my server to use local ip?

Please advice me and thank you so much