Based on the info you provided in your original post, I'd still go with the 700r4. If your not fixed on the o.d., the 350 is a good choice too. (since you already own them.)

There must be millions of them on the road and they work fine, it's all in the setup. If you do the research and make yourself familiar with the settings and what's required, I'm certain you'll make it all work and be happy with your selection.

Pugsy provides some sound information, check out the link. It's really pretty easy.