Planning an Assassin CoC build (not Cospri's)

I am planning to league start a CoC build this league, having never played one before. Bit of a personal challenge and a project to work towards.

With the help of some of the people on here, I got a lot of information on how CoC works and I've read up on the breakpoints.

Now with the new PoB, I need to actually plan out the tree and skills. Initially I thought about doing Martyr of Innocence Blazing Salvo build, but that would require to path all the way to the templar side of the tree. So for now the plan is cold conversion Reap.

However, after a bit of planning the damage and defenses are a bit lacking. With Hatred aura on, the damage bumps up to about 2m but defenses are non-existant so I am trying out Grace instead of Hatred as a defense bandaid. The build contains some very generic items that should be achievable without much investment; this is not a min-maxed version, merely something that I could achieve after a couple of weeks of play. 1.5-2m dps will be perfectly fine for mapping, just won't be very good for bossing.

So I'm asking you guys for input and improvements you'd make here, bearing in mind to keep things within a reasonable budget. There's a reason there's no +1 power charge helmet here, I will almost certainly not be able to afford awakened CoC etc. Maybe there's a better spell to do this with, or a different pathing? I'm not quite interested in the usual cold CoC builds mainly because of the price of Cospri's at league start but it's definitely an option at some point.

Note, one of the jewels has "29% more evasion rating" this is to compensate for the new Grace gem which has not yet been updated in pob.

PoB: https://pastebin.com/bMB08wDG