From what I gather from the
Join NIWA page on the Hub, Wikkii, advanced hosting or not, is not classed as an independent host. I may be wrong, but I personally wouldn't call Wikkii's "advanced hosting" independent. It's still hosted by a wiki farm, after all.
So, if you're not willing to pay for hosting, the best option is really to merge to Wicarus. I'd love to see an independent Kid Icarus wiki join, but Wikkii doesn't truly offer independence. They may seem much better than Wikia now, but they still own the wikis, and if they wanted to, they could close down their advanced hosting, and you wouldn't have any say in it.