Hello!
If u really love science that much, then perhaps if u have time, u should be an undecided for a while, and take classes in Biochem and Neuroscience, for I don't think Biology is any different from these two. Then, see which u like better. If u like Neuro, go for Neuro and Biology..though I seriously don't understand how they two would complement each other. I think they will overlap a lot, and u must might end up taking some ecology and botany classes. IF u like Biochem, good for u..u will take some chem classes.. In both cases, u will be well prepared for medical school. And, take french classes now itself..maybe u might instead end up being a french major.
To be honest, I was like u. I was a Biochem/Zoology major..and that was what I wanted to..for the sake of science, and to be honest, for me it was a part of the equation. I loved science and I loved medicine. However, after going through many Zoology classes, I realized that I would better able to enjoy myself by taking extra Zoology classes as electives..but since I was a double major, I was not able to take them if I intended to get two degrees. During my first semester, junior year (I graduated in 3 years), I decided to do my Honors thesis in Zoology though that meant I might not be able to take some P.Chem classes...I loved it so much..I instantly stopped taking any classes pertaining to my Biochem major, and have happily enjoyed taking field ecology and comparative anatomy classes. Perhaps P.Chem would have better prepared me to make an A in Biochem more easily in Med school, but who cares!! To be honest, u can ace medical school even with ur 8 hrs of Biology!!! It doesn't matter. My only regret is that I didn't do this any sooner..and I wish that if I had started as an undecided instead of stern science major like everyone else, I might have found something even more interesting..such as classics..
And, I agree with people. If u can have fun and still be able to go to med school. I wouldnt be worrying about if I will ace Biochem in med school... I would go for the French major. I have come across obnoxious premeds..and the funny thing..is I never considered myself a premed, once I got out of the Biochem/physiology/micro classes..it is the people around u that make u what u are..and the less u are around premeds..the better u are. For this reason alone, go for the French..go for something interesting. Take as many classes as possible!!