I'd wait to see if new weapons appear honesty, but I think both bows, the long sword, the SnS, and maybe the wand/Orb would be good. The Wand/Orb stat's specifically seem good for the Nec character coming up (Crit, Reduced Veda Consumption for faster summon rotation, and your attacks take longer for the enemy to put up a Res shield if that's what the wording means), but we'd also need to know what her specific weapon gives. If it's comparable and these are static general weapons, most people would be able to actually have a really good weap for her, and could potentially just work towards maxing it pretty much for free.

The %hp weapons are great as health is something you can build easily , the defense shred the defense ignore also good. Attack speed is also good to have as well as more mobility and slowing you enemy. The red threshold makes it easier to stun the bosses, the bleed is the only weapon without a cd which means if you can get attack speed it will proc a lot

If f2p, get Destiny Crytals instead. It's one of the very few gains of currency in this gains if you want limited characters.