Since you have to start with building content first anyways you can try on both. Bald sites are pretty bad for SEO I think.
I've got to say I've got zero experience with blogger, but Wordpress I love. It's actually quite easy and making real proper themes for it ain't that hard either. Since Wordpress is über documented, I'd go with that if you are willing to put some time in. You can eventually even go for your own CMS since blogging isn't really much else than storing posts and comments in a database and then showing them on the site.
Also in the start, when you are still developing and building traffic, you can get a free host like x90x or 000webhost. They don't show advertisements and are pretty decent on the Fair Use. File Manager and FTP suck but you won't be using them once you're set-up.
I'm working on a few blogs of my own and learned quite a lot already. If you have any specific questions I'd be glad to answer them!
Good luck yo.