For this kind of job, you need a local licensed architect who is familiar with local building codes. Try the "find a pro" tab.

agree with apple pie, but what my eye says is to have the rectangular porch that existed already, then steps down to the level where wood and cement meet, where I'd put a sort of front patio with space for some arm chairs and general lounginess; then another set of steps to ground level. would make a virtue of necessity, and nothing else will hide the climb.

You most definitley need a local professional licensed architect to help with this situation....