That's a fair enough stance. I'd recommend not taking any outside contributions until you are sure about the license, since it'll make it much harder to change the license if you do. Or maybe require all outside contributions to be licensed very permissively, like using the BSD license. Or you could use a CLA, but that's not something I'd recommend. Either way, licensing is hard :(. I can emphasise with the head hurting.... Oh, also, check out https://tldrlegal.com/ .
