I totally agree with the reccommendation you lose some wis...even if you find yourself without KEI you'd still have super wis if you adjusted for it. I can tell you don't have the mass plats or uber raiding guild behind you (which is perfectly fine, and often more fun with less stress), so I think a lot of your gear is great. But yeah the hat...oh god the hat. My 61 cleric right now has the Othmir and GE boots and they both make her cry. I'm spending money on spells so won't be upgrading soon unless I can get a lucky drop somewhere.
I can see you do LDON at least a little bit. Forget everything else and for BP upgrade check out the 1492 nro Royal Attendant Breasplate of Sand (http://www.allakhazam.com/db/item.html?item=25336). You like your wis and that's fine. This thing has 10 on it, and although not the godliest raid type stats, that type 3 slot is more FT with some more points. Type 2 slot isn't so bad either ;). In the meantime, the suggestion of an architect's bejeweled is awesome. The more it drops the cheaper it gets. If 10k or whatever else it is now is too much, I think you can still upgrade that BP for really cheap (say under 2-3k?) for at least a little bit of a AC/HP boost.
Anyway, I understand what seems to be your predicament, perhaps not a lot of time, definitely not a lot of money. You blew all of it on those Boots of Flowing Slime. I blew all mine recently on an Ornate Vambrace Mold for http://www.allakhazam.com/db/item.html?item=17849. LDON is for people like you and me. It might take one LDON a night for a few months but the 1492 stuff is great so check it out :)