shapeshifter/enchanter ideas+Triple Crown advice

[Kavoth]

Been toying around with an enchanter shapeshifter today and havent seen any similar builds around so figured id share. the synergy is hella strong.

the whole idea is simply to use enchanter spec to buff the crap out of yourself before shifting and punching the clock. playstyle is super straightforward, but between the few good druid self-buffs, and the tons of strong enchanting buffs, you feel very very unkillable. another plus-side is that mage buff durations tend to synch up quite closely with shapeshifting timers, so once your shift is up, you just rebuff and turn into a different beastie. 

Trying to decide on a main build to make the triple crown attempt with and am now choosing between this, devoted/soul blade, chanter/pally, and singleclass beckoner.

would appreciate any insight on these classes and thoughts on how theyd fare on TC