Herb,

Dan's answer is 100% correct, but let me put it another way for you. Just making the wing larger will result in an airplane that takes off and lands slightly slower, but the controllability will suffer and the airplane will be more difficult to fly. It also may not be able to recover from a spin.

Think of it this way: What if you modified your Yak by making the horizontal and vertical tails smaller and shortening the fuselage ? That's essentially the same thing as increasing the wing area. How would it fly ? Certainly not an improvement !

Dick