well apparently GR4 is when you get more quests. I have only s ranked 3 missions so far though
I'm about 3000 kills (sounds like a lot but i should be able to get at least 300 kills an hour, which is a lot faster than it was) from the far cry plat. Hopefully i'll get that this weekend. So next weekend i should be able to play WKC for however long you're on for

I will only be on on weekends and bits here and there in holidays (hopefully i'll do some of my other games in holidays).
I'm not bothered about platinuming the game quickly, But i'd like to plat it eventually. even if it takes a year playing a few hours here and there. Chances are that i'll be playing quite a lot if you're on it a lot though
also, what version of the game do you have? i heard from kira that the version which comes with wkc2 cant play with the release version. havent tested that though.