any suggestions about build? always problems with fcr

Well I am probably not the best for this as I have a pure PvM Zon built a different focus.

My build currently is...

Weapon - 200ed eth up'd Titans
Shield - Phoenix (I like Phoenix because of Redemption which takes care of all your mana issues, esp since your merc would be using Infinity instead of Insight. The 400% extra Enhanced Damage is a big bonus as well as the high fire absorb when doing chaos or the million hydras in travincal.)
Amulet - Highlord's
Helm - 5/5 lite die facet'd Griffon's
Armor - I swap between Fort and Enigma. Tele vs Dmg. If you care moreso about FCR then Fort would be a better option for you.
Belt - Razortail (The Pierce effect plus 1 point into Pierce in your skill tree will give you the 100% piercing which is great when using skills like Lightning Fury) Tgod's is also a good option.
Gloves - I use 2 jav skill / 20 ias / 15 str / 10 dex / double resist gloves. I believe there's magic ones out there with like 2/30 or 3/30, something like that....but I prefer having the resists and extra stats so that I can focus putting more into vita.
Boots - I use FRW/FHR/Tri-resist boots. There's a handful of options here, but again I wanted to make sure in hell that I had 75+ resists across the board.
Ring 1 - Ravenfrost (Very important for the cannot be frozen)
Ring 2 - Currently using SOJ, but again since you don't struggle at all with mana from redemption on the shield, you could use an fcr/str/resist ring or if you want more life steal you could use a BK ring and still get the +1 skill for jav skills.

Switch hands is currently a 6bo cta and spirit.

Merc - I use eth andy helm with ral rune, eth bugged AP Fort and Eth CA Infinity

Inv. - I use anni, torch, +1 java skillers that have the FRW on them (When you're using Fort if you do, it's nice to still move really fast ) Then depending on how your resists are you can use some resist SC's or if you have the fg you could always go for the 5 resist all / 20 life sc's.

For stats I just do the common theme of enough str for gear, enough dex for max block, rest into vita, none into energy.

For skills I put one point into each skill of the passive tree minus the three on the left side which I believe are inner sight, slow missiles and valkyrie. Then I focus the rest of the points into the java tree maxing Lightning Fury and its synergies starting with Charged Strike for bosses.

From a PvM standpoint this build has worked very well for me and I am very happy with it. I can clear anything in Hell. If you do any PvP then there's a bunch of changes I am sure.