for a hassle free spec, go with a sotf build. i have both specs for swapping between fights. you use sotf and doc. i hotkey wrath for my mana regen and for fighting boredom. with a sotf build all you have to do is stand still and spam wrath once in awhile when you get low on mana.
feline swiftness is nice because its low maintenance. however once you get to raiding competitively, you will want the on-demand blink of displacer beast.
sotf excels on butcher, brack, koragh and imp, but use incarnation build on kargath, tectus, twins. the cds are a pain sometimes because we tend to forget them while botting. sotf takes care of that.
another thing, sotf will eat your mana, so pair with doc for that wrath spam heals and mana regen. [wrath doesnt regen mana, but it pauses the cr and when you aren't healing, you arent using mana.]
always go with an incarnation build in dungeons. healing cds for pretty much every single pull. one thing, shroom burns mana, use it sparingly with low spirit.