Take it from someone who was originally in pharmacy school...80% of his friends are pharmacy students or pharmacists...and is currently dating and living with a PharmD.
Don't use your PharmD education as a stepping stone. It is 6 years of work just to add another 10 on top of that?
It doesn't make sense.
In the last 4 years alone I have know 5 friends who all said "when I graduate I am applying to medical school."
Well, one of them is going to law school, one took a year off from school and has not returned (that was 3 years ago), and the other 3 are current practicing pharmacists...in Delaware, Pennsylvania, and Arizona.
It is a tough road. Pharmacy school can burn you out. I was lucky, I switched boats before it got to be too tough.
And just in case you think that having the degree adds something special to your resume, well, it really doesn't do all that much. Sure, the title looks good and it shows you can handle the curriculum, but it doesn't get you a special interview or a second look-over.
Do your B.S. in pharmacology or pharmacokinetics. Or even a Pharmacology-Toxicology program. You will know a good chunk of what the PharmD education will teach you, minus the therapeutics and the actual practice stuff, but you will have more than enough to put you well ahead in medical school.
Hell, I was ahead in medical school when it came to pharmacology only from living with my friends for the past few years, working in a pharmacy myself, and taking just a few of the basic pharmacy courses.
Now, if you want a nice lifestyle, stick with pharmacy. Pharmacists got the right idea. Schedules are sweet and starting out companies in the northeast are paying $90-$100K to start.
PM me if you want to talk more. I know a good deal about this topic. I was in your shoes about 3-4 years ago. I can lay it out more in depth for you.
Peace