Does width come from tweeters? Mids are way more important, and if the mids are in the doors it’s far better to match the width of the mids with the tweeters imo
I would put the tweeters in the sails and put them more on axis vs cross firing, I am not a fan of eq to make a driver sound like it’s opposite number, I’d rather have two drivers that are equally off axis, normally this is somewhere between the headrest as far as aims, maybe a little towards each sides own respective headrest if the stage collapses in somewhat
you want the width of the tweeter to match the width of the mid as much as you can, that way the centre of the tweeter will match the centre of the tweeters far better, perfect staging is two point sources (this is why widebands do such a good job of staging… they do have other down sides however, it’s swings and roundabouts)