Gemma,
OLSB is great, and i have read up alot on what its going to be changing into, didnt really like what i heard so i went looking. Wordpress is great, but you need to host it somewhere, therefore you need to pay for hosting with any of the hosting websites. Im with a U.K based host and pay £29 a year, plus £4 for my domain name.
As for the free sites, i tried google, it doesnt seem too bad, i just could never get the hang of it. And then i tried Weebly, which was better than google i thought for a basic website.
Id say give them both a try, they are both free and you can try them out and see if you can come up with something before you let your page go ''live'' otherwise look into getting a hosting account and use wordpress. I sorted my own hosting account out, and i got someone to desgn my site with wordpress exactly like it was with OLSB.
Cheers,
Matt