Consider reworking your attitude, surprised anyone is even considering helping you with how you're replying to some very good advice. The class has changed a tonne since you last played any decent amount, just because you played the spec through beta and dinged on day 1 doesn't make you some sort of mistweaver god.
Now to answer your question,
http://www.askmrrobot.com/wow/gear/8...c-b5257e721bdb
Click optimized and it even gives you a nice list of how to gem and enchant. Consider going to the Timeless Isle to get free 496 gear, then run Siege of Orgrimmar LFR. Your gear is shockingly dated, if you're not going to show a bare bones effort to optimize your character (I mean jeez, your professions?) why do you think anyone would go into specifics for 25 man raiding?
-Get a ReM tracker and make sure to hit a TFT Uplift when you've got 7/8 ReM targets, on 10m you can be much more lax with this.
-Mastery can be slightly better than spirit in 25 man, however your gear is so bad you won't benefit from this information.
-Chi Torpedo and Chi Brew are all very good talents for 25 man because they can bug out and reset their target cap resulting in double healing.
-Get rid of Rushing Jade Wind, you will not be able to sustain it at your level of gear.
-Ascension and Power Strikes are both terrible options, with an exception being made for Ascension when you're heavily fistweaving. On 25man this is relegated to easy or gimmick fights. Chi Brew is the king of t45 in every other situation due to synergy with TFT (and always has been).
There's your 25 man stat priorities, spell priorities and a good amount of direction on how you can get good. The moral of this post is if you don't want to be treated like a scrub, don't come asking for help that is out of your league when your character is optimized like a scrub.