Piezography 700 step XRite DTP70 Colorport target

Walker, the paper is Arches Platine. I have had the paper a few years and have no idea about the batch number. I might have bought it from Bostick and Sullivan. I only have a couple of sheets left. I am leaving the country in a few days and will not be able to continue this until I return in 5 weeks. Would it be better to start with a new batch of paper when I return?
Thanks for your response. Catherine