Hey Wasatch Skier--welcome to EpicSKi!
I know it sounded like some of these guys were being harsh or avoiding your question, but I think they really were giving you the right answers.
Getting a job and becoming a successful ski instructor (your original question) really is much more about your attitude, personality, and realistic expectations than your credentials. Most ski schools, even the major resorts, hire instructors with no ski teaching experience, training, or certification whatsoever. They're looking for attitude, warmth, communication skill, eye contact, an easy smile, and enthusiasm, along with adaptability and trainability. They will want you to ski well, and understand and demonstrate clean, contemporary ski technique, but they can (and will) train the right people in those areas.
If you really want to make a career of it, even for just a few years after college, don't wait until you graduate. If your school is in ski country, seek out a small, friendly, family-oriented local ski hill nearby and try to get hired part-time. You may work weekends and holidays, perhaps an evening or two. Take advantage of any training they offer. Find a mentor if you can to guide your progress. Join PSIA and attend a few clinics and work toward your Level 1 certification. It's fun! And the experience--and the pin--will go far toward your first job at a major ski school. While you may get hired either way, if you're certified and experienced you'll have a huge leg up on the priority roster at a big resort, and I think you'll enjoy your first full-time season a lot more.
I speak from experience, by the way. I happened across an ad in the local paper for "ski instructors wanted" at a small hill near my school my sophomore year. It hadn't crossed my mind until then, but I gave 'em a call. I taught very part-time, nights and weekends. I met some great people, and learned a lot about skiing--not the least of which was that I was much more of a hack than the hot shot I had thought I was. I was hooked. Took the next two years off to teach skiing in Colorado, then returned to the little part-time hill until I graduated. I've been at it ever since. Be warned!
And stick around EpicSki, too. I don't know a better place to get your skiing questions answered, or to try out your own ideas on a pretty savvy group of skiers. I look forward to hearing how it goes for you!