Looked at the dodges but did not care for the interior
I'm a lifelong Chevy owner, but bought my 2014 Ram 2500 because of the interior, love that cattle brown/black.
I've never done it, but I would think custom ordering a truck gives you less negotiating ability. On the Rams last year, it was really Laramie Longhorn or Limited. There wasn't much individual option picking. The only thing I didn't get I wish I did and can't add are power folding mirrors. I would think the $ you would save by negotiating hard on an on-the-lot truck would be good $ towards some aftermarket mods allowing you to overall end up better.