That's all right. Whatever you choose, in the end it's your character. I think it's very original but you can do with it what you want. You can even have multiple fursonas, if you like. Personally I only have one fursona who developed quite a bit over time, and I have an alternative characters for roleplay and art.
Anyways, you shouldn't worry too much about the character being more expensive to draw. Sometimes there's a flat rate for one character, sometimes it gets more expensive for more complicated looking characters (though a lot of complex markings are usually what makes the price go up significantly).