Hi Slinn,

So here's the basic rundown of your problem: You don't have the raw stats to keep up with any measurable amount of damage.

You have no enchants or gems. These are things you absolutely need for progression content. Even relative progression content. I understand the desire to avoid spending tons of money on stuff that's going to be obsolete very quickly but throwing some relatively cheap lesser enchants/gems could go a long way.

At a glance I figure you could pick up the following on the relatively cheap:
Cloak - Intellect (+30)
Gloves - Haste (+50)
Shield - Mastery (+50)
Wrist (Possibly) - Spell Power (+23) from WotLK
Weapon - Exceptional Spell Power (+50, WotLK)
Ghostly Spellthread (50 int, 45 spirit)
Boots - Haste (50 haste)
Shoulders - Your profession buff! Felfire Inscription! Do it! Do it now! (130 int, 25 haste)
Ebonsteel belt buckle

Gems, you've given up 5 gems. Even socketing 30 int/15 int+15 haste green quality gems in to them you're missing out on 140 int, 30 haste, 10 crit assuming you stick to int/haste gems with socket bonuses.

For the (relatively) low cost of the following you could be...

4 blackfallow ink
10 infinite dust
2 greater celestial essence
24 dust
2 greater cosmic essence
1 lesser cosmic essence

+270 intellect (an approximately 8.5% gain over what you have)
+155 haste
+50 mastery
+10 crit
+45 spirit
+73 spell power

Keep in mind, this could cost you a fair bit if you bought it all outright on the auction house with mats but shopping around a bit can probably get you some deals. I'm currently sitting on a pile of +mastery to shield enchants because they're selling for less than a gold on my server and that's not worth moving.

In total this'll cost you several hundred gold, so pick what you can do carefully and see if you have any friends who can help you out.

Also, drop Ancestral Resolve and Totemic Reach in favor of three points in Acuity. You can use the output right now.

Good luck. :)