Another consideration ..
(a) for low weight and rolling start, the breakaway thrust is comparatively low .. one is some distance down the runway by the time full thrust is set
(b) for high weight and rolling start, the breakaway thrust is high and full thrust is set before the aircraft has progressed any great distance
(c) .. low weight AND limiting distance departure may dictate the sense of holding on brakes initially.
Re pitch up, this can be a problem in excessive tailwinds ... however, if the AFM technique words are heeded, and limitations observed, then one should not need to be too concerned ..