Yes I agree, bump up unarmed.
My second character is going to be inspired by "The Operative" from the movie Serenity. I made him last night and played through the intro (i.e. went back to my first character after killing geckos with Sandy). I chose:
Melee
Unarmed
Speech
Unarmed is pretty amazing from my first impressions. High speech is pretty useful in NV from what I've seen by level 12 with my first character. Many dialogue options. That and barter. So I'd probably go with
Science
Survival
Unarmed
Speech or Barter
Explosives
Though honestly I'd only go with explosives to stay with the lore of MacGyver. NV didn't put nearly enough explosives in the game to make an explosives skill a legitimate replacement for a combat skill like Energy, Guns, Unarmed or Melee..