If You care about rank; 50 EXP +
If You don't have; SPOP / STAR
Rest; Crates, Personally I would say AK knife/Scope if you're usually good with high recoil or AKs in general.
M4-Custom If you're better with the smoother weapons, Or M4's in general.
Kriss if you want a weapon that does most of the work for you (I.E it's easy to use / Not much skill needed).
AWM Dragon If you like snipers, Plus it has a sexy and sleek look.
Good Luck on winning, And Even if you don't, Let's hope you get enough coupons to get yourself something nice