mitchellbuzzing

Hello, Now i am new to skydiving and am just starting to get my gear mainly Altimeters and Audibles and i was thinking of getting two for my wrist and one Audible but idk if i am choosing the right combination of Alti's i was thinking about having a Neptune N3 and a Altitrack on my wrist and a Pro-Track as my Audible tell what you think and suggest. Shot.