WoW to FFXIV transition guide..

[Soukyuu]

Movement, I agree. Combat, though, I think is far more difficult with a controller.

It's not. It's just different.

In particular, selecting skills on the action bar by hitting LEFT LEFT LEFT LEFT LEFT LEFT SELECT RIGHT RIGHT RIGHT SELECT UP SELECT DOWN LEFT LEFT LEFT SELECT is really frustrating to me when I can just hit a few number keys instead.

Optimize you skill layout and you won't have to do it too often.
Animation lock is negating any advantage keyboard is giving you, except for having more free time.