Hm, what's the point of the site if it doesn't have the comic on it? Would you be using it as a blog, posting WIPs, tuts, news about your comic? If the sites only purpose is to redirect people to your series on tumblr or tapastic, it seems like a waste of space and your time, honestly. Sites take time and promoting to get people to visit it in the first place. You could use the effort more efficiently by cutting out the middle site and just promoting tumblr and tapastic. Also consider, what would happen if these platform sites just disappeared one day or they start to die out like DA on the decline or Inkblazers. I recommend having an official site where you also post your comic because it's fully yours, it looks more professional and serious have a YourComic.com type site, you can add and feature anything you like on your site like a store, positive comic reviews on your series, and earn ad revenue, and you can embed widgets on to your site like a kickstarter campaign, Patreon campaign, your twitter feed and more.
Having just a site saying go to Tumblr or Tapastic for Cosmic Fish, isn't worth it in my opinion.
I'm not sure what Wix is, however, there are other options for building website. I use Wordpress/Comic Easel and it has served me well. There were moments of terrible web design troubles and struggling to figure things out, however, once I got through that and have the site how I want it all I do is schedule posts and let it do its thing.
I personally, like how my comic navigates on tapastic over my site, however, it's not terrible and I get more traffic to my main site than tapastic so I live with it. haha Maybe one day I'll struggle and learn how to implement infinite canvas on my site, however, for now it works fine.