I kinda agree with CC that if you want to start a Wiki about Kindaichi, it should be independent and unrelated to DCW, otherwise it wouldn't be a good idea.
Just because KCF is not as popular as DC doesn't mean it has little information. If we throw all of the Kindaichi pages (e.g characters, plots, anime, manga...) into the DC Wiki, it will be inconvenient for outsiders (especially for those who doesn't even know this series). Therefore, if you believe you have the good condition for starting a Kindaichi Wiki, then why not do it independently ?
Also, I personally don't like the idea of using Conan's fame to advertise Kindaichi or to draw people's attention towards the series. KCF is a good mystery manga, so what if it's not well-known ? I don't like it when Kindaichi has to stand under Conan's spotlight to become more famous. This is the worst side-effect. So again, if you really want to make this series truly famous, I'd rather you made its Wiki independently.