I want my handle bars and saddle to be at the same height on my road bike. I am 51, over weight and not due to sitting so much at work and an old injury not too flexiable. I am not into racing but love the characteristics of a race bike, quick acceleration and handling. This means using a really ugly riser stem or a bike that is a couple of sizes bigger than fashionable, I am ok with the bigger frame. The question I have is will the bigger frame be a poor handling machine?