Default [Q] CM 11 for Canadian Note 3

Hey guys, I'm looking into flashing CM 11 into my Bell Note 3. It's been a while since I've modded a phone. Got a few questions. If I flash CM 11 into my phone will I lose any features? Such as S-Pen functions (i.e. Air view, etc). What kind of issues am I looking at if I flash? What am I gaining? I've looked at other threads but I just want to make sure what I'm getting myself into when modding my phone. Also could someone please link me to a thread for flashing CM 11?