Wow, for a first post it's pretty much, welcome to the community! ^^
I don't agree with AK, because it's damage is good. If you can control the recoil well, shoot only 3-4 bullets at a time, it's worth it. I'll give it a 8/10
(I had it, and it's great, if you can use it)
P.S.: If you want to use AK, use AK camo!
I agree, with what you said about M4 Assault, but I think it has a little annoying recoil, when you don't expect. I rather say, use the M4A1 Advanced(I think that is the perfect weapon), because with that, I've got.. kind of 50 : 15.
K1A is for noobs. If you are playing CF for a while, or this is your second character, buy something else, stronger weapon.
With the other ones I totally agree!
CONGRATULATIONS, VERY NICE FIRST POST!
And again:
WELCOME TO MPGH!