Jim, Boveda makes a fine product. If you let the humi sit with the packet(s), it will evenutally (depending on the size of your humi) acclimate to the boveda packets RH settings. With a single packet...might take a while. Some people like to speed up the process and place a small bowl of distilled water in the humi for "seasoning". A lot of brothers here use beads (Shilala or Heartfelt) and they are AWESOME. Very minimal maintenance. The only thing with using strictly Boveda packets, is that you will have to replace them periodically.
Also, you may want to "salt test" your hyrgrometer. Search for these topics on CA and you will find an abundance of answers/theories.
I would suggest that you may not want to keep your humi at 84% rh. May want to look into some 70% rh or lower. Just my
