what about the mc does he need a lot of strength for very high damage?
Depends on your play style... once Tia joins your Party there are hardly times that you fight on your own.
I gave my Character 10 strength, 10 Intelligence, 10 Constitution, 10 Hunting and 10 Armor Proficency, all other Traits are Level 3, but I am currently Leveling Perception and Dexterity since those are also Main stats.
Tia and Lyvia have 15 Strength, 10 Perception, 10 Dexterity, 10 Constitution and 10 armor Proficency (Tia also has 6 Nature).
To Start the game you should raise Hunt to Level 5 (you can get 1 free Level by talking to Corven in the Bar and than hunt a rabbit for a Paw) and than go for 1 Perception and 10 Constitution, 1 Dexterity will unlock armor crafting so that is definately a must have since crafted armor is better than any armor you can find in the game by drops or shops so far