Hi Tamia: Everyone who has posted here so far has said lockpicking didn't work for them, so I didn't buy it. Actually, so far I've only come across a few things that I couldn't get into, because keys could usually be found. So, I guess it's up to you. Some people here didn't have luck with the disable traps skill, but a few of us really liked it.
Zanthia, I usually play more of a mage with some warrior skills, so I'm not the best person to give advice on a warrior character. For a mage, it's best to get a ranged weapon so you can stand back and let the heavy duty warriors get in there.
My Death Knight is a warrior, however, and I have him very heavy in two handed weapons (swords, etc). I started out one handed with shields, but the further along I got the more I used two handed.
I guess it just depends on what your two characters are going to be. I love swords, but, as I said, for my main character ranged weapons seem to work better.
I finally finished BF 1 in Act 4!