Hey, I switched a while back. There's no 'follow' option as such on Wordpress but people can subscribe via e-mail, RSS and Wordpress's 'Readomatic' feature. The followers that are worth keeping will subscribe so I wouldn't worry about that. Wordpress lets you know how many subscribers you have and who they are. It is definitely worth the move. Wordpress looks a little daunting at first but it is very easy to use and way more professional. The customisation options are way better too so you can make your Blog look more unique. You will lose your comments (I think), when I switched I just abandoned my old page with a link to my new one rather than moving all of my content, so I'm not 100% on that. Hope the move goes well and I'll come check out your new page when it's up =]
I'm not sure about the comments, but I think they get moved over as well since they are included in the backup when you transition over. You won't be able to keep your followers, but your followers can subscribe. I prefer Wordpress because there's so much more you can do in terms of the layout. Good luck! :)