As other mentioned, time spent in graduate school is well worth it. I met many people overtime with lower degrees and most of them were complaining about their ideas not taking seriously or in general under consideration, and that the possibilities for promotions were limited. Having said that, I personally value any good ideas and do not discriminate if the person has or not a PhD...
If you want a PhD in bio-separation science, Dr. Guichon wouldn't be the most appropriate supervisor... I would suggest Northeasten university (i.e. Barry Kanger, Bill Hancock, Paul Vouros etc). They will probably find your background in biological science and cancer research interesting (as long as you ommit to mention that you find it boring...).
About the salary... (by the way in your age you should be thinking about saving the world by doing good science and not how much money you will earn

)I recently participated in a salary survey and they sent me the results which I already misplaced. Entry level PhD in academic was >50K, in national laboratories/government was >70K and industry was >80K. Having said that, salaries in industry will vary a lot depending on the sector (i.e. pharmaceutical pays much better than food industry).