To start, I would begin at a PLB. Check out ETS article: http://equippedtosurvive.com/shot_show_2007_gear.htm#microfix.

Aeromedix has a nice Aviator Survival Pack at: https://www.aeromedix.com/product-exec/p...ks_#productINFO if you are os inclined. Its comprehensive and fits into a backpack.
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“Always remember the 6 P’s”
(Prior Preparation Prevents [censored] Poor Performance)