Greetings/
I am also gearing up for the application process (sculpture). I am afraid I don't have any amazing advice for you. As far as "undergradish" work, my opinion would be just to present your strongest work. I think you know what pieces are your most effective. My plan is just to show the work I feel best about. If there are pieces that are not as realized but the concept is important for future exploration, I may consider including it. If I get a chance to speak about the work, I will convey this information. As far as consistency versus experimental...We are students, I think experimentation is invaluable and expected. An artist whose work shows a rigid adherence to some sort of style may not appear as attractive as a candidate. It may appear as if you are timid, already set in your ways, or reluctant to growth and evolution. Of course, the opposite may be true as well. A portfolio with no cohesiveness may present your work as being rudderless or lacking direction.This is all just my opinion. These are sort of wishy-washy responses to your queries. I am not sure there are definitive answers. In any case, its still very early in the process. I am still trying to figure out what schools to apply to. I have a few definite choices, but I am doing a lot of research on different programs across the country. I wish you luck. This is my first post, so I should also say hello to everyone, and express what a resource I have found this site to be, thus far.