PVM is kind of just a "process" to get to endgame though. So you should be considering endgame scenarios like MVP, PVP, WoE, etc.
Every good player shares their gears between their different characters because it's always better to buy one expensive good item to share between multiple characters rather than five or more average items. Unless the person somehow has like ten megs and fifty MVP cards or something...
That being said, your gears look fine in general already and I wouldn't worry too much about small minor boosts. FAWs are really good and I'd suggest getting one as every character benefits from it. High level monsters hit really hard and if you want to out-pot their damage you need a witch hat + alarm mask combo (fish in mouth will not have enough heal per second). But RKs can use a quadruple hunter fly weapon to leech HP back so you are sorta okay... maybe. But other characters will really benefit from it and you probably want to get one sooner or later.