It is not in islam to force a girl into a marriage without her will and you are already saying you will not be a dutiful wife, by this I am already sensing unlikely circumstances sooner in your married life, hence it is better that you take stand now and simply seek divorce rather than doing the same at a later stage, when the harm done would be bigger.
I also suggest you to do istikhara before you take any final decision, so as to prevent yourself from any form of regret later Insha’Allah