what 4.2.2 to get OTA updates? and some questions topic

so i was gonna go with a custom 4.4.2 rom but decided otherwise
so since my phone didnt get the 4.2.2 update yet n900xxucmk2 i thought getting one for another country russia decided
will i get ota updates even if i dont live in russia?

2-is there a way to root the phone 4.4.2 AND still get ota updates?
3-anyone found a way to remove mymagazine from 4.4.2 without causing the touchwiz to crash?
4-im backing up all my important apps using titanium backup, after i flash the phone with 4.4.2 will i loose all the apps? and if i loosed them will i loose the back up since titanum will be removed?

thanks