[Cerek the Barbaric]

You might try Charm or Domination on opponents and use them to "Detect Traps" (ie, send them ahead and let them set off the traps). You could also use your Monster Summoning spells for the same purpose (when you get them).

As for your kensai level...you WILL NEVER receive any more exp. points in the kensai class. Once you dual-class, you QUIT the first class in order to pursue the second one. You eventually regain the abilities of the first class, but you NEVER gain any more experience in that class.