I know next to nothing about modeling-- actually I know exactly nothing. But if your window is so large you can't get at the dials and stuff, you can resize it under the Window menu-- it's the last on the list. This happens to me every time I load a preset scene. You can render to a different window at a much higher size-- I rendered to 1500 by something or other pixels last night. That's valuable for a final render. And it also helps to render a bit larger if your checking teensy stuff, like do the toes come through the shoes? Look under Render options.