[Q] Need help On Rooting GT N7000 and installing latest CWM?

I installed SuperSU Zip throw recovery to Root device also Busybox ( first is that right? )
already SuperSU is working fine , but cant install CWM throw ROM manager , Flash error
please I need help to go further I want install customed versions like 5.0
thanks , I will be glad if someone provided me links of all downloads the ROM and google apps ZIps that is compatible and stable for GT N7000 thanks