Yes, you can licence it however you want because you are the copyright holder. See mongodb. IANAL. Licences are to restrict those who do not hold copyright.
> Licences are to restrict those who do not hold copyright.
On the contrary, licenses gives permission to those who do not hold copyright. Without any license, only the copyright holder has any rights to copy or modify the work in any way (except for fair use). A license gives permissions to non-copyright holders to do things which would otherwise be illegal under copyright law. A license can never restrict what anyone would otherwise be allowed to do, since it is not a contract.
On the contrary, licenses gives permission to those who do not hold copyright. Without any license, only the copyright holder has any rights to copy or modify the work in any way (except for fair use). A license gives permissions to non-copyright holders to do things which would otherwise be illegal under copyright law. A license can never restrict what anyone would otherwise be allowed to do, since it is not a contract.