I'm having trouble deciding what to get next. I have access to Naxx/OS 25. Will soon have access to 10 Uld. I want to get another piece of valor/heroes dreadnaught to hit my 2pc bonus but i feel like it's sort of a big tradeoff (either will lose too much hit or a bunch of crit). I don't want to get the BP or Helm cause I can just buy T8 with emblems. The gloves and pants I feel like will lower my dps, but I guess not by much.
I'm also having trouble getting rid of my spike titansteel helm cause it's giving me 60 hit rating which is a good chunk of my hit currently. I know I have to get rid of that resil ring but I don't know which one to get.
Re: Need help with what I should try to replace next
You still have drops to get in heroic Trial of the Champion, so keep trying. (Necklace, Bracers, Boots)
Others:
Get your T7 2pc bonus, I recommend swapping out your helm or legs.
Legs - Replace ASAP, haste is very poor for Arms. Get regular T7 if you have to.
Finger - Ring of Invincibility or Titanium Impact Ring are the easiest to get.
P.S. - Getting your missing enchants should be your priority, even if they're low quality they'll make a big difference.