Double TR'ing to a Paladin intimitank

So I'm planning to double-True-Reincarnate (when the option becomes available of course) to make the best 36-point Paladin intimitank possible.

The question is... what two classes would make the best choices for their past-life feats, whether passive or chosen?

I'm thinking at least one of Fighter is a no-brainer. But what should the second past life be... Barb, Paladin, or another Fighter even?

I'm thinking Barb and Fighter for both their past-life AND chosen feat. Thoughts? Or maybe another class too? Let me know.

PS. Reincarnating additional times is NOT an option. Thanks!