Effectively you want to have 2 different phalanx sets, one when fighting and casting phalanx midcombat, and one for casting phalanx when idle.
Idle set you want to just go full blown enhancing skill+, and swap to Deacon Sword
and priwen, and yorium for all other slots for another phalanx+3, as well as JSE cape with +5 augment as well. This gives you a total of Phalanx +27~30 depending on if you go with yorium cuirass or shabti cuirass (more on that later)
Combat you instead want to maintain your 50% PDT and then get as much fast cast/recast/etc in on top of souv hands/feet.
Dont forget that Priwen also gives phalanx+2!
It's important to note that a capped skill, fully meritted paladin only needs an additional 9 enhancing skill to get its last possible +1. Since its not possible to hit +37.5 skill in gear, all you need is just +9.
Id put it as a toss up between phalanx+3 from Yorium cuirass and Duration+9~10 from Shabti cuirass. You're choice.
This means paladin should be able to currently pull off a total phalanx of 61 damage reduction total. Effectively speaking, you can over double the potency of your phalanx with all this gear!
ItemSet 347829