I use a lot of Acufine with Apx 100 shot at 200 and have always been happy with the results. However if I use it with studio strobes I shoot it at 100 with the same development time. The short duration of my strobes causes a one stop reciprocity.
My understanding for replenishment is to do it after each batch to maintain consistancy. When I have replenished I only replenish half as much as is recomended because I begin to notice less contrast. enjoy pjc