correct me if I'm wrong, but doesn't the whip no threaten whithin it's reach? This creates problems in that you can't make AoO's against foes moving withing reach. Therefore people are just going to move past you, or up to you and wail. I made a build like this in 3.5 using the lasher and exotic weapon master which allowed me to threaten within the full 15 feet as well as a bunch of other awesome tricks. I personaly played a half ogre born to a chaotic good nobles daughter after the local ogres raided and raped her. Despite my evil nature I was taught the ins and out of proper society while being hidden from the prejudiced populace. I was eventually thrown out of town when i was dicovered. In my absence the townspeople revolted and overthrew and killed my family. When I returned I tapped into my ogre nature and killed the whole town.
Practically this build was bard 1, ranger 2 (to represent my noble hunting and entertainment training also whip proficiency and two weapon fighting) fighter 2, to represent my time away from home working for various city guards and taking bodyguard jobs. Then berbarian levels after I slaughted my home town. I then jumped into exotic weapon master and lasher for incredible battlefeild control. Ask you're dm if he wants to convert those things, or at least put their class features as feats for you to take.