as a new rider i would get along to your lbs and see what fits your use and your geometry,they will set you up on a turbo ,advice you to your needs ,set up the bike and then maintain bike till you have more bike savy,have a look at specs once you have found a frame that fits you,the defy might be great fit for you as it is for me,i wanted a full 105 set up and a full carbon set up so i paid for that ,but as anew rider the frame and set up is paramount for your enjoyment,a bike shop will also be prepared to add items suck as clip less pedals and set up as you go through your cycling journey so establishing your relationship as i have is a good thing