My sk has better ac then yours and I didnt spend more then 10k on her.....so you throwing pp out the window on yours is silly.....and there is lots of buyable gear at 65 and 66 in nonvisible slots (look at her belt) I do like your shoulders.
I have however made wise AC gear choices and gotten her 7 ac augs....including one in her shield which should be your top priority.
http://eq.magelo.com/profile/1338790
Here is her profile and I would say get magnetic for the ac boost on helm and bp along with stats UNTIL you hit 65. I see you do have a few of the ac augs but I can tell you it is ALOT more work for me to gear her as a tank then my druid main.....hps/mana ok great (yes some mod2's and focus but meh)
You sound like you want someone to say yeah don't play a tank ......that decision should be yours.
Plenty of threads on where to get the ac augs and even decent hps augs with mod2's.....you shouldnt even be thinking about DoD missions at lvl 63......lvl 68ish with basic defensives done sure......look at the sk board of one groupable gear excel sheet and go from there.
Also look in my sk's alt profile the por gear is not bad either to mix and match until you hit 71 for tss gear.......make a plan, stick with is, spend time reading from the veterans here and other melee boards.
good luck on your decision,
Cibby