So, I'm making a FoH / Smiter on HC I'm trying to be able to pvm every area including Ubers without having to constantly respec but I'm okay with respecing if need be. also I'm trying to do away with insight and use an act 5 merc with lawbringer and plague build is as follows with farming gear and leveling/harder areas gear listed and questions I have to corresponding gear.

Shako(cham'd)/CoA (ber,Cham)
2/20/8@res ammy/Mara
Enigma/GA(10@res,35 fire res, +3MAEK) is it worth using the upped GA with 1.5k defense 196 str req. CoA has 174 req so not much different but still.
Hoto/Heavens light(2x 15%ias +3MAEK)
Spirit 45res,35fcr ST/ HoZ(pdiamond alternatively 15@ res, +3MAEK) thinking if I go with upped GA using exile.
Magefists or trangs/draculs or 20ias CB gloves with str and res haven't decided which for either yet.
1x fcr rings with res, soj/ 2x fcr
Verdungos
War travs/Goblin Toes

20/20 ani, 19/19 torch, 3fhr pcombs,3lifer pcombs 13x 5@ res scs with mods

I guess my question is would it be better to go upped GA with exile with 20%ias gloves with CB str/dex maybe for block chance and resistances( would be 68% CB with HL,GT, and gloves), or wouldn't be worth it to use exile without the upped armors.

Or Reggie GA draculs grasp and a HoZ for when I am smiting.
Leaning toward heavens light, spirit, 2/20 ammy,draculs, and 2 fcr rings for hybrid farming. 75 fcr breakpoints a sorc of lifetap and crushing blow with the same plus to skills as hoto. What are the thoughts?

I would stick with one ctc curse at a time. If you go A5 use only one of either lawbringer or plague depending on what skills you use more, or keep both to switch depending on what youre farming. 2nd merc weap can either be straight damage or even crescent moon for static field procs.

When you do ubers youre gonna want life tap always though so either dracs or exile and dont use any other items that cast other curses. Rest of gear I cant really say, ive only played pure smiters never that kind of hybrid, but thats at least my advice on those things.

Yeah for hardcore I think the cleansing aura is too useful not to use plague for general farming for ubers I'll probably use a grief and and death on the merc.