Assassin/Ninja Lvl 65 Assassin Build

I started the game a few days ago and im at level 65 assassin now. I'm looking for a good assassin build in the level 65-70 region. I'm not sure if I should go for a mana build or a melee build, but I'd love to hear recommendations for either.

 

I slapped a lot of random gear together and came up with this:
https://wynnbuilder.github.io/#4_0mX0tY07z02y0c70cF00W00A0Pz0p0o140S0p11000010005A
WynnBuilder build:
> Spectre
> Crystal Coil
> Chained Pixels
> Bad Wolf
> Morph-Emerald
> Morph-Topaz
> Binding Brace
> Durum's Serenity
> Locrian [t4t4]

Crystal Coil can be obtained from the Magmastream Core boss alter and really boosts your melee damage. I slapped Binding Brace so you could settle for anything else with skill points. T4 powder Locrian for chain lightning.