Thought I would organize the pieces a little and breakdown their stats
All gem bonuses are met (assuming 5 str > 2 agi now that shifting tanzanite is allowed to be used more than once)
Assuming aldor, epic leg enchant, 15 agi to gloves, 6 all stats, and 34ap/16 hit enchant
Hopefully this helps a bit:
EDIT2: Personally leaning towards Druid Helm/Shoulders + Rogue Chest/Legs + T6 Gloves (4 piece), No idea, I'll let the pro's do the extensive math vs. 2pc t4 Etc.
EDIT3:
Money Belt -----> T6 = +4 ap, -0.82% crit, +1.39% hit
Insidious -------> T6 = -2 ap, -0.08% crit, +91 A-Pen
Shadowmaster -> T6 = -10 ap, -0.96% crit, +1.25% less Dodge/Parry
I mean really it doesn't look that bad at all to maintain the T6 bonus which is arguably more or less the same as 2pc-t4 in the first place.... which you get to keep for the price of virtually no ap and 2% crit while also gaining +1.4% hit, 91 A-Pen (going to be nasty with the 6.5+new weapon), and much needed Expertise.