Default [Q] Stupid noob ? I Had 4.3 ota update, rooted with cf autoroot, can I instal cm11

I know this is a dumb noob question, but I rooted my s3 with cf autoroot and after updated supersu root works fine and knox is removed but i want to install the cm11 4.4 rom, 2?s, im still on stock recovery, can I install cm11 without flashing twrp or cm recovery and also since i had the 4.3 update will cm11 brick my phone? I was told it tries to flash the bootloader and I know thats prob a bad idea.
thanks,