i just did the el30 ota update. is it okay to still use this odin and zip
You probably want to flash in Toadlife's EL30 kernel to keep you on EL30 completely. The zip here is an EI22 kernel.
http://xdaforums.com/showthread.php?t=1460540
So after Odining in the recovery without reboot checked, If it doesn't automatically pop you into CWM then pull the battery and pop it in and 3 finger into CWM and flash Toadlife's kernel.