Other parts are pretty okay and is about getting similar ones but with better rolls.
let's go one at a time since upgrading is never cheap..

1. Quiver - DML or Danetta as offhand
- Determine whether you want to use HA or Bola and find a quiver with HA or Bola bonus. Cluster arrow reduction is also very sexy.
- Always try to get 20% AS on the quiver.
- Get a quiver with +DISC or double roll on DEX and VIT

p.s: I think 1H + quiver combination is the lousiest of all. So try to get a Danetta with OS as the offhand. One with + DISC, socket, DEX and base CHD.

2. Solace combination
- IMO, the best combination here would be Bloody Footprints + Embrace
- For Natalya Boots, get one with DEX and VIT if possible
- For Embrace, you have two option but make sure you sync it with your DML:
i) If you decide to get +DISC on your DML, you also get +DISC on your embrace
ii) If you went with double roll on DEX and VIT on your DML, you get +AR on your embrace

3. Pants / Belts / Bracers
- Basically, there are a few choices here. Depth diggers/Rare pants + The Witching Hour + Lacuni combination, inna's temperance + Inna's favor + Rare Bracers combination.
- What you wear here is determined by your weapon (calamity or manticore)
i) If you chooses to use calamity, the +% elemental bonus and dex bonus from inna's set would benefit you more. So get inna's temperance and inna's favor if you go for calamity since AS is not a problem here.
ii) If you choose to use manticore, a pants with as much DEX, VIT, AR and 2OS is preferred. Here, you get Lacuni and TWH belt (for more AS).

p.s: Some rares roll extremely high DEX, VIT, AR and 2OS.
p.s.s: The DD + WH + Lacuni combination is much more expensive than the later.

4. Rings / Amulets
- Since i'm a manticore user, i always go for the following combination on rings if possible and if my EHP allows me.
+ xx-xx dmg
+ DEX
+ 8/9% AS
+ <4.5CC

Bonuses like AR on rings and amulets are welcome. If you like set/legendary items, the wailing host is a good ring (my personal favorite)

5. Gloves
- Get trifecta gloves if possible but is gonna cost. If you can't afford it get one with either the following two combination AS, CC and CHD. I think this is determined by what weapon you use again.

6. Shoulders
- Current BIS is Vile Ward.

7. Helms
- Current BIS is Mempo of Twiligh