Absolutely no on the bracers, keep those 18. If anything the headband should just be raised from 17 to 18 int.
It used to be a 18 int item until half of the forum started whining that it was a "broken item".
Which is weird, given that it's situationally MARGINALLY useful at best (there's ONE class and half that benefit from INT in the game, and that one wouldn't want to rely on equipment to get to 18 when they should probably aim to reach a natural 20 in it) not to mention part of the standard D&D mid-level itemization.
