Deer regions are a nonresident thing only, basically its a bunch of general license areas they group together to form one big "region"
Deer areas are usually limited draw areas that cant be grouped into regions for management reasons
Temps in mid october around here are hit and miss, This year we had snow and also had temps in the 80s. just have to come prepared.
Meat processing is usually around $100 and a pronghorn shoulder mount will set you back about $575 but most places you pay half when you drop it off and half when you pick it up that way it dosnt break the bank too bad.
Hope this answered your questions.