What are my chances of getting into a Ph.D. program?

<p>Hey everyone! I'm currently about to enter my senior year of undergrad, at 21 years old. I will be obtaining two degrees when I graduate: a BS in biology and a BA in psychology (also completed a minor in chemistry). In order to get both degrees in 4 yrs, I have taken summer classes, and my regular semester credit hours have been 16+ hours. Here are my credentials:</p>

<p>-cumulative GPA: 3.76 (My GPA in my psych courses is a 4.0), and I have taken biology courses in anatomy, human physiology, along with organic and biochemistry courses and a full year of both physics and calculus
-currently on a full scholarship for my undergrad
-participate in Habitat for Humanity; involved in an annual homelessness awareness program; about a year volunteering in a pen pal program for underprivileged elementary schoolchildren; Relay for Life participant; member of Psi Chi, a honors psychology organization
-summer research in an endocrinology lab, working with rats
-performed data collection on two thesis projects last spring for two graduating seniors
-participated in Quest, where I presented some organic chemistry research with two other students
-about to get a job working as a peer tutor on campus
-about to start another research program with one of my professors, working with schoolchildren (if I continue this till I graduate next spring, I will get published)
-my senior thesis will involve working with schoolchildren (I also will be completing a capstone for my biology degree)
-I have yet to take my GRE, but I'm scheduled to take it in August
-I work part-time at kennel, and I have been there for the past 4 years</p>

<p>I want to pursue a Ph.D. in a psych-related field, and I'm leaning towards developmental psychology. So, based on the information above, would I be a good candidate? What can I do to improve my chances? Thanks for your help!</p>