Pretty solid nerdo...I'd say just get an audio editing program with an EQ and play around until it sounds like the low end and the high end of your voice comes in nicely(it'll take up the quality a lot without having to buy new mics for certain voices)
also no one wants to hire a VA who doesn't want to be...so don't defend yourself in the description and don't claim that people won't like it...I've been a VA for a few years and pointing out flaws instead of attempting to work them out just makes people not want to use you...
regardless pretty good character voice1