I don't advise to you, to reach the 13k haste cap, because you would simple loose too much main and other secondary stat. (not just 1.5k int, 3k spirit but 6.2% mastery as well) You can only reach that cap with hard geming haste everywhere, loose most of your socket bonuses. This is because most of your gear doesn't have haste on it.
On the talents, as i see you are in progress. When you are in progress, don't try to use one talent to all situation, it wont work. They are all good, but can be used effectively on different situations.
LVL60 talents: SotF: use it if you don't need hard healing cd, but need some extra utility, or you have to cast your tranquility really fast (also the best if there is a huge constant dmg for a long time); Incarnation: only if the dmg can be fitted to a 3min window, or if you have mana/movement problems in some parts of the fight; FoN: use if there is a heavy dmg in every minute or so, where you can stack up (like Magera)
LVL90 talents: HotW: if there is a phase where the other healer can heal out the dmg, and you have a 45 sec, when you can nuke the boss, or if you dont need any of the other two talents; DoC: great on fights, where you cant reach the whole room, but the boss is somewhere in the middle (like Immerseus), and the dmg is not too high; Nature's Vigil: i would only advice this, if you wipe because there were not enough healing, idiots standing in aoe doesn't count here.