pmmantle I only build bows for a living
I am glad you are able to answer your own question

Rey you are partially right Long stringing the bow will indeed shorten the brace heighth but it will make the DW less will make the a to a longer thus not making the bow any faster so you have really made a futile attempt to reduce the brace heighth to gain speed but have really just complicated things and will also make it a pain in the rear to get the cams in time (not too bad for a solo)

but the bow will also shoot like crap the best effective way is to shorten the limbs, string and harness.

but better yet just go buy the bow that has the specs you are wntimng from a bow