On the tweeter toe in issue I suggest suck it and see.
Most loudspeaker designs are regular box speakers. The off axis frequency response isn't all that great because the dispersion varies greatly with frequency, changing between the wide bass/mid drive unit near as high as the drive unit can go (starting to beam at the listener) to the narrow tweeters with broader dispersion.
Ideally you want even power response so that the reflected signal is similar to the direct sound. You don't really get this with most boxes.
With most speakers the safest bet for the flattest frequency response is to aim the tweeters directly at the listeners ears. OTOH you may prefer the speakers barely toed in or even crossed in front of the listener.
As I say, suck it and see!
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