Let's say that the exams for MCAD are Exams A, B, C, D, E, F, & G.
The exams for MCPD are A, D, E & G

So you have to take A, D, E & G anyways... so start there, get the MCPD, then go back later and take B, C & F. That gives you both the MCPD, and the MCAD. The MCAD is a higher level certification anyways. And as you pointed out, you're still early in your career.

Be warned though... some of these tests are designed so that you'll need to have practical experience, so right out of the gate, I don't know how well some one will do. At least that's the intent... it's done in an effort to prevent paper certifications. The success of which is debatable.

-tg